How to Fix Error 421

Repair Error 421

What is the Error 421?

Error 421 is a common SMTP (Simple Mail Transfer Protocol) Outlook error message. MS Outlook is one of the best and popular email applications widely used by PC Windows users for sending and receiving emails within and outside workplaces.

It is most commonly used in offices by professionals for faster communication.

This error may occur while sending and receiving emails on the server. The error 421 messages is displayed in either of the following formats:

“An unknown error has occurred: Server error 421”

"Could not send your message. Error 421"

421 4.2.1 : (DYN:T1) http://postmaster.info.aol.com/errors/421dynt1.html

421 4.3.1 Out of disk space for temp file

421 4.3.2 All server ports are busy

421 Downstream server error

421 Fork failed

421 Greylisting enabled, please try later

“An unknown error has occurred. Subject ‘Testing’, Account: ‘pop.charter.net’, Server: ‘mail.charter.net’, Protocol: SMTP, Server Response:

’421 Message rejected’, Port: 25, Secure(SSL): No, Server Error: 421, Error Number: 0x800CCC67”

Solution

Restoro box imageError Causes

Some common causes for this critical Outlook error are:

  • PST storage size exceeds 2GB file size
  • Improper ISP settings
  • Slow internet connection
  • PST file corruption
  • Trojan attack and viral infection

This is a critical Outlook error that should be resolved timely. If you delay, it may cause you a great deal of inconvenience.

The error code 421 hampers your ability to access your email account, send and receive emails, add new contacts, view emails, calendar entries, and journals. In other words, it just brings your email activities to a standstill locking you out of the account.

Further Information and Manual Repair

To resolve this error code on your system, you don’t always have to hire a professional or call the network personnel to do the job. It may be a critical error but the good news is that it is quite easy to fix. Even if you don’t have technical expertise, you can still repair it.

Here are some of the best methods to repair this issue on your system:

1. Change the Server Settings to its Maximum Limit

Try changing your server settings. Here set the inbound connections limit at the maximum limit.

  • To do this, open the Microsoft Exchange Server Administrator utility. The access path of this utility will vary depending on the installation procedure used to set up Exchange Server.
  • Once you open the MS Exchange Server Administrator utility, click the ‘Connections’ icon in the left side navigation pane. Now double click the internet mail service icon in the right side pane. As you click it, the Properties window will open.
  • Now click the ‘Connections’ tab in the Properties window and then click the ‘Advanced’ button. This will open the configuration window.
  • Here reset the number for ‘Maximum Number of Inbound Connections’ to a high number, its maximum limit. After changing the settings, close all open Exchange Server Administrator program windows to successfully complete the process.

After the process is complete, try accessing your Outlook email account again; if it works, then that’s great the error 421 is resolved. However, if it doesn’t, then the problem could be related to viral infection.

2. Download a PST Repair Tool

If the cause of the error is PST files corruption, then not only will you be locked out of your email account, you are also at risk of losing all the data stored in your email account.

However, the best way to resolve the error and ensure full data recovery is to download a reliable PST repair tool. By running a PST repair tool on your system, you can resolve the error 421 right away. It recovers your data, repairs corrupt and damaged PST files.

3. Scan Your PC with Restoro.

If viral infection and Trojans are causing the error 421 to pop up on your system, then it is recommended to download and scan your PC with Restoro.

This is an advanced, intuitive, and user-friendly PC fixer. It is not just an antivirus but also a system optimizer and a registry cleaner.

Unlike common antivirus software that only removes viruses and simultaneously slows down the system’s speed, Restoro removes all types of malicious software on your PC including malware, spyware, Trojans, and viruses, and also boosts the speed of your PC significantly.

It is safe, easy to operate, and a quick fixer. It is compatible with all Windows versions.

Click here to download Restoro and resolve error 421 today!

If you like to learn and find out more about various Windows errors, and how to repair them go to our vast archive or use search to find articles that will explain and help you in solving your issue.
However, if you prefer to do things fast and with automatization then we are proposing to use an automated solution for your issues. The application that we are recommending is Advanced System Repair Pro
Advanced System Repair utilizes multiple tools all in one to give you a quick, simple, reliable, and very thorough diagnosis of your PC. It brings you all the tools you need in one program to clean, fix, protect, optimize and boost your PC!
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Junk Cleaner
Keeping your computer free from unnecessary clutter also helps make your computer last longer. Like any other machine, if you keep it clean and take care of it, it will serve you better for longer!

Optimize background apps
Optimize applications background activity with the built-in Application Optimizer feature.

Disk Defrag
With a simple 1-click, Advanced System Repair speeds up your PC by assembling fragmented files on your machine and organizing them more efficiently.

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Finds and removes all types of harmful malware including trojans, worms, bots, adware, spyware, PUPs, and more!

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The all-in-one privacy suite to Clean Your Tracks & Protect Your Privacy! Make your computer safe, secure, and more efficient!

System Tweak/Optimizer
ASR will analyze your complete system and settings to adjust your PC to function at its maximum performance.

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Over time, as you install and uninstall applications, the registry can become cluttered with old entries and broken settings which can result in program crashes, and annoying messages and slow the computer down.
Visit our Advanced System Repair Pro Download page to inform yourself about all the benefits of this software and get a free trial copy of it.
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How to Repair Windows 10 Error 0x800F0922

Repair Windows 10 Error 0x800F0922

Error Code 0x800F0922 – What is it?

Error Code 0x800F0922 refers to an issue with downloading the newest version of Microsoft Windows, Windows 10. It could mean that your PC doesn't have enough free space in the System Reserved partition, or that it couldn't connect to the Windows Update servers. This issue is not very common, most users will never see this error code. Some, however, will need to follow the below fixes in order to download and upgrade their systems properly. Common symptoms include:
  • Dialog box appears with the Error Code 0x800F0922
  • Microsoft Windows 10 upgrade is unsuccessful and/or incomplete
  • Users are unable to open applications after attempting the Microsoft Windows 10 upgrade

Solution

Restoro box imageError Causes

There are two standard reasons why this error occurs during the Microsoft Windows 10 upgrade.
  • There may not be enough free space in the “System Reserved” partition of your hard drive.
  • Error Code 0x800F0922 could also mean that your PC was not able to successfully connect to the Microsoft Windows update servers due to a VPN (virtual private network) connection in your home or office network.
  • The .Net framework installation portion of the Windows 10 upgrade fails.

Further Information and Manual Repair

Error Code 0x800F0922 as stated is somewhat rare, but it does occur occasionally. Users who have experienced this error while attempting to upgrade their system to Microsoft Windows 10 have the following options for do-it-yourself fixes.

Method 1:

Use this method if you are operating on a network that uses a VPN connection.
  1. Disconnect from your office or home network.
  2. Turn off your VPN software.
  3. Run the Microsoft Windows 10 upgrade.
  4. Restart your PC.
  5. Reconnect to your home or office network.
  6. Turn your VPN software back on.

Method 2:

This will run the Windows 10 Update troubleshooter that is built into your PC.
  1. Click on the Windows icon on the lower-left corner of your desktop.
  2. Press the “w” key to open the SEARCH function.
  3. Type “troubleshooting” in the search field and press ENTER
  4. When the troubleshooting window opens, select the “view all” option from the left window pane.
  5. Select “Windows update”.
  6. Select “advanced” and then choose the “run as administrator” option.
  7. Click the NEXT button and follow the on-screen prompts.
  8. This troubleshooter will walk you through the steps needed for your specific situation.

Method 3:

This method will run the DISM (deployment image servicing and management) tool built into your PC.
  1. Press the “windows key” on your keyboard followed by the “x” key.
  2. Select the “command prompt admin” option.
  3. Type the command “exe /online /cleanup-image /scanhealth” into the command prompt field and press ENTER.
  4. Wait for the scan to run completely.
  5. When the scan is complete, a message will appear telling you that “the operation completed successfully”.
  6. Type the command “dism.exe /online /cleanup-image /restorehealth” into the command prompt field and press ENTER.
  7. This will take a while to run completely, but it will restore any missing or corrupted files necessary for the Microsoft Windows 10 update.
  8. Restart your computer.
  9. Attempt the Windows 10 upgrade again.

Method 4: Use this option if you believe the issue is a result of the .NET framework being disabled.

  1. Press the “windows” key followed by the “x” key.
  2. Select the “control panel” option.
  3. When the control panel window opens, click your cursor in the search field on the upper right hand corner.
  4. Search for the phrase “windows features”, then select the link “turn Windows features on or off”.
  5. Select the check box (add a check) to the box next to “.Net framework”.
  6. Click the OK button.
  7. Proceed with your Microsoft Windows 10 upgrade.
To resolve this, all you need is third-party software to increase the size of the System Reserved partition. One of the four methods listed above should fix your Error Code 0x800F0922 issue and allow for a successful Windows 10 upgrade. On an occasion where there isn't enough space, use third-party software to increase the size of the System Reserved partition.  If you do not possess the technical expertise required to accomplish this yourself or do not feel comfortable doing so, download and install a powerful automated tool to get the job done.
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Find out bottlenecks in your PC easily
Building a custom PC is a great feeling but it can sometimes not be ideal and we are not talking about breaking or losing parts. What we mean is that choosing the right components can be sometimes a difficult task. Of course, picking a PC case can have its issues, choosing the right power supply can be tricky but pairing all components together, especially CPU and GPU can be tricky. bottlenecksBuilders with no depth knowledge and experience can sometimes choose improper CPU or GPU, picking one of them to be much more powerful than another thus not using it to its full potential because another component cannot handle stuff at the same speed. In order to not be trumped by this kind of stuff, there is a website that is completely free and you do not even need to be registered in order to use it. Bottlenet calculator link here What is even better, once you input your components you will get advice on what to change in order to tweak the system a little more to avoid bottlenecks even more. It is a very useful tool and we are advising you to use it in order to save money but not throwing it on some component that will be half used.
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Problem running preinstall.cmd scripts
Setting up the Windows operating system in a computer can be quite a complicated task since there are a couple of things that take place in the background to ensure a full and protected setup of the operating system which includes a number of programs, scripts, and so on. They work together in the background to guarantee the integrity of the Windows operating system. However, there are times when this piece of code could also go wrong. As a result, you might encounter errors like the “There was a problem running preinstall.cmd scripts” error. “Preinstall.cmd” is a type of CMD file associated with Applications & Drivers developed by Gateway for the Windows OS. To fix the “There was a problem running preinstall.cmd scripts” error, there are several things you can try. You can try to download a new Windows installation image or create a new bootable drive as well as uninstall conflicting or incompatible programs. In addition, you can also run the Windows Update troubleshooter or reset Windows 10.

Option 1 – Try to download a new Windows installation image

Your first option to fix the “There was a problem running preinstall.cmd scripts” error is to download a new Windows installation image. You can get the official ISO files for the latest release of Windows 10. After you’ve downloaded the ISO files, you can use them to upgrade to the latest Windows 10 version.

Option 2 – Try creating a new bootable drive

  • Insert your USB drive into your PC.
  • Tap the Win + R keys to open the Run dialog box and type in “cmd” and tap Enter to open the Command Prompt. Alternatively, you can also search for “cmd” in the Cortana search box to open Command Prompt.
  • Once you’ve opened CMD, type in this command to open the DISPART utility – diskpart
  • After that, you should see a new black and white window that would say, “DISKPART>”.
  • Next, type in “list disk” in the command line and tap Enter to see the list of all the Storage devices as well as your hard disk connected to your PC. Here, you have to identify your disk’s number.
  • Type in this command where “X” is the disk number you have identified and then tap Enter – disk X
  • Type in this command and hit Enter to clear the table records and all the visible data on the drive – clean
  • Now you have to recreate a new primary partition of the drive so you’ll have to type in this command and tap Enter right after – create part pri
  • A new primary partition has been created so you have to select it by typing this command and tapping Enter – select part 1
  • Now you have to format it to make it visible to normal users by typing – format fs=ntfs quick
Note: If your platform supports the Unified Extensible Firmware Interface or UEFI, replace the “NTFS” with “FAT32” in the command on Step 10.
  • After that, type in this command and tap Enter after – active
  • Finally, type this command and hit Enter to exit the utility – exit
  • After you prepare the image for the operating system, save it to the root of your USB Storage device.

Option 3 – Try to uninstall conflicting programs

If you are using a computer made by Dell and got Windows 10 preinstalled in it, then you can try to uninstall the programs listed below and see if it fixes the problem.
  • Dell Encryption Management service
  • Dell Digital Library service

Option 4 – Run the Windows Update Troubleshooter

You might also want to run the built-in Windows Update Troubleshooter in Windows that could help you in resolving the “There was a problem running preinstall.cmd scripts” error. All you have to do is go to Settings > Update& security > Troubleshoot > Windows Update. From there, click on the Run the troubleshooter button and follow the next one-screen instructions that appear. After that, restart your computer and check if the error is now fixed or not by trying to install the update once again.

Option 5 – Run Microsoft’s online troubleshooter

Running Microsoft’s online troubleshooter might also help you fix the error. This online troubleshooter is known to help in fixing Windows Update errors, it scans your computer for issues that might be causing the problem and then fixes them automatically.

Option 6 – Try to reset Windows 10

  • Tap the Win key or click on the Start button located in the Taskbar.
  • Then click on the Power button at the bottom right portion of the screen.
  • Next, press and hold the Shift key on your keyboard and then click on Restart. This will restart your Pc into the Advanced Startup options.
Note: Once you have access to the Advanced Startup options, you have to go to the setting which allows you to Reset your Windows 10 PC. All you have to do is select Troubleshoot > Reset this PC to reach the following screen Afterward, select either the “Keep my files” option and then proceed to the next on-screen instructions that follow to reset your Windows 10 computer without losing your files.
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Fix Your PIN is no longer available in Windows
A recent update in Windows 10 has caused a couple of glitches. One of these glitches is having trouble signing into Windows 10. Some users reported that they were not able to sign in to their computers using a PIN and they weren’t also able to reset it either. If you are one of these users, then you’ve come to the right place as this post will help you resolve issues that you are having in signing in to your computer using your PIN or fingerprint with Windows Hello. When you encounter this issue, you will get an error message on your screen stating:
“Your PIN is no longer available due to a change in the security setting on this device on this device.”

To resolve this problem, you need to follow the steps laid out below carefully.

  • Step 1: The first thing you need to do is to make sure that you are using an administrator account. After signing in as admin, tap the Win + E keys to open the File Explorer.
  • Step 2: After that, under the View menu, enable Hidden items.
  • Step 3: Next, navigate to the following path:
C:\Windows\Service\Profiles\Local\Service\AppData\Local\Microsoft
Note: From there, you should see a folder named “Ngc”. This folder might be the one that’s causing the problem so you are going to fix it by making some changes. This folder contains all the files responsible for any PIN-related settings. So if you are not able to access the Ngc folder, or it has gotten corrupted for some reason during an update here’s how to fix it.
  • Step 4: Try opening the Ngc folder. If you are able to open it, just skip to step 11 but if you can’t open it and you got the “Permission Denied” error message, proceed to the next few steps.
  • Step 5: Right-click on the Ngc folder and select Properties.
  • Step 6: Under Properties, go to the Security tab and click on the Advanced button.
  • Step 7: Next, click on the Change link which corresponds to the Owner field.
  • Step 8: Then click on Object Types and ensure that everything is selected.
  • Step 9: After that, enter your username in the field. You can just use the email that corresponds to your Microsoft account or you can also use the Check Names button to verify it. Now click OK.
  • Step 10: You should now see a change in the owner's name. Just make sure that you enable the checkbox below it which is labeled, “Replace owner on subcontainers and objects” and then click Apply and close everything.
  • Step 11: Next, try opening the Ngc folder again. You should now be able to access it. After opening the folder, delete all of its contents and make sure that it’s empty.
  • Step 12: Restart your PC. After your computer has booted, go to the Account Settings and try setting up a new PIN. You should now be able to set up a new PIN and use it to sign in to your PC.
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Bluetooth flaw, Android and Windows in danger
bluetoothResearchers have discovered 16 vulnerabilities in Bluetooth connections that could be exploited and make from minor to some serious damage to your device. The flaw can be used on chips manufactured by Intel, Qualcomm, and Texas Instruments while connecting to external devices like speakers, headphones, keyboards, mice, etc.

Who is affected?

Mentioned chips are used by many in a vast range of devices including big players with their products like Microsoft Surface laptops, Dell desktops, Samsung Phones, Google Pixel, and OnePlus handsets. The Bluetooth bug affects a wide range of devices, including smartphones, laptops as well as smart home gadgets. In total, more than one billion devices that rely on Bluetooth are believed to be impacted.

What is the damage?

The amount of damage possible with this flaw depends on the type of device with the chipset. Some devices can only be crashed after a specially crafted packet is sent to the flawed chip. If that's the case with your gadget, it can be easily resolved with a simple restart. With other devices, hackers can take advantage of the Bluetooth Classic flaw to remotely run malicious code. That could allow malware to be installed remotely. Researchers say vendors were informed about these issues months ago before the findings were published. The good news is this should have given plenty of time for the relevant patches to be pushed out that remedy the flaws. However, you'll need to make sure that you're running the latest version of the operating system to be protected by the patch crafted by the manufacturers.

Android Bluetooth threat

The researchers emphasize the lack of basic tests in Bluetooth certification to validate the security of Bluetooth Low Energy (BLE) devices. The BrakTooth family of vulnerabilities revisits and reasserts this issue in the case of the older, but yet heavily used Bluetooth classic (BR/EDR) protocol implementations. We would also advise users to disable Bluetooth on devices that do not need it. This way you can prevent attackers from sending you malformed LMP packets. Since BrakTooth is based on the Bluetooth Classic protocol, an adversary would have to be in the radio range of the target to execute the attacks. So, in a safe environment Bluetooth can be enabled.
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Fix Chrome Error ERR_ICANN_NAME_COLLISION
If you are browsing the internet using the Google Chrome browser in your Windows 10 computer but you suddenly encounter an error message that states, “ERR_ICAN_NAME_COLLISION”, read on as this post will walk you through in fixing the problem. Here’s the full content of the error message:
“The site can’t be reached, This site on the company, organization, or school intranet has the same URL as an external website. Try contacting your system administrator. ERR ICAN NAME COLLISION.”
This kind of error is caused by an error in a private namespace or a random redirection to an incorrect proxy server. There are several ways to fix this error. You can try to check the integrity of the Hosts file or check the proxy. You could also try to use the Registry Editor and apply some tweaks or remove any conflicting browser extensions or flush the DNS cache, as well as run a malware scan.

Option 1 – Try to check the integrity of the Hosts file

To check the integrity of the Hosts file, refer to the following steps:
  • You have to navigate to this path inside File Explorer: C:/Windows/System32/driversetc
  • After that, look for a file named “Hosts” and right-click on it, and open it with the Notepad app.
  • Next, make sure that you write the block URLs in your computer in the list and then save the file.
Note: There are times when you are logged in with administrator credentials and you may receive an error message. In such case, type “notepad” in the Start Search and right-click on Notepad from the search results, and then select the “Run as administrator” option. After that, open the Hosts file and make the necessary changes and save it.

Option 2 – Try to check the Proxy server

There are some users who reported that they’ve fixed the problem after they’ve disabled the use of a proxy server using the built-in way. Follow the steps below to disable the proxy server.
  • Tap the Win + R keys to open the Run dialog box.
  • Then type “inetcpl.cpl” in the field and hit Enter to pull up the Internet Properties.
  • After that, go to the Connections tab and select the LAN settings.
  • From there. Uncheck the “Use a Proxy Server” option for your LAN and then make sure that the “Automatically detect settings” option is checked.
  • Now click the OK and the Apply buttons.
  • Restart your PC.
Note: If you are using a third-party proxy service, you have to disable it.

Option 3 – Try to use the Registry Editor

Before you apply some registry tweaks, make sure that you create a System Restore point. Once you have that covered, follow these steps:
  • Tap the Win + R keys to open the Run utility and type “Regedit” in the field and tap Enter to open the Registry Editor.
  • After that, navigate to this registry key: HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesTcpipParametersDataBasePath
  • Look for the default key and double click on it and make sure that its Value data is set as “C:/Windows/System32/driversetc”.
  • Now exit the Registry Editor and restart your computer to apply the changes made

Option 4 – Flush the DNS cache

You could also try to flush the DNS cache to fix the “ERR_ICAN_NAME_COLLISION” error. All you have to do is open Command Prompt as an administrator and then execute each one of the following commands sequentially to flush the DNS cache:
  • ipconfig/release
  • ipconfig/renew
  • ipconfig/flushdns

Option 5 – Get rid of any conflicting browser extensions

  • Open Chrome and press Alt + F keys.
  • Go to More tools and click Extensions to look for any suspicious browser extensions or toolbars.
  • Click the Recycle bin and select Remove.
  • Restart Chrome and press Alt + F keys again.
  • Proceed to On Startup and mark Open a specific page or set of pages.
  • To check if the browser hijacker is still active, click Set pages, if it is active, overwrite the URL.
Note: If removing the browser extensions or toolbars didn’t work, you can also try to reset your Google Chrome browser.
  • Open Google Chrome, then tap the Alt + F keys.
  • After that, click on Settings.
  • Next, scroll down until you see the Advanced option, once you see it, click on it.
  • After clicking the Advanced option, go to the “Restore and clean up option and click on the “Restore settings to their original defaults” option to reset Google Chrome.
  • Now restart Google Chrome.

Option 6 – Run a malware scan using Windows Defender

It is possible that your computer is infected with malware which could be why you’re getting the “ERR_ICAN_NAME_COLLISION” error. Thus, you need to scan your computer using Windows Defender.
  • Tap the Win + I keys to open Update & Security.
  • Then click on the Windows Security option and open Windows Defender Security Center.
  • Next, click on Virus & threat protection > Run a new advanced scan.
  • Now make sure that Full Scan is selected from the menu and then click the Scan Now button to get started.
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What to do if the Windows Wireless Service in Windows 10 is not running
When experiencing internet connection problems, most users run the built-in troubleshooter to fix the problem. However, you might come across another problem when instead of fixing the problem, the troubleshooter throws up an error message saying, “The Windows Wireless Service is not running on this computer”. After displaying this error message, the troubleshooter would exit. Usually, this kind of error indicates that Windows has failed to initialize the wireless service so it can start searching for broadcast signals and try to connect to them. So in this post, we have prepared some workarounds that might help you resolve the issue.

Option 1 – Try to check the WLAN Status

You have to make sure that the wireless service is enabled in your computer before you proceed to the other troubleshooting options below as this error could occur for a simple reason as the wireless capability is turned off from your PC either on some built-in settings or physically. This is why you need to make sure that Wireless is enabled. And if it turns out that it is disabled, you need to turn it back on and then reconnect to the wireless network again. You should now be able to connect to the internet without any issue.

Option 2 – Try to check the WLAN AutoConfig Service

The WLAN AutoConfig service is the one that provides the logic and functionality required to discover, connect and configure wireless networks with your PC. Aside from that, it also contains the module that allows your PC to be discoverable to other systems on a network. Thus, you need to verify if the WLAN AutoConfig service is on or not.
  • Tap the Win + R keys to open the Run dialog box.
  • And in the field, type in “services.msc” and hit Enter to open Services.
  • After opening the Services window, look for the entry named “WLAN AutoConfig” and then right-click on it and select Properties from the context menu.
  • Next, click on the Start button to turn on the service and then set the startup type as “Automatic”.
  • Then try to connect to your Wireless network again and check if the issue has been resolved.

Option 3 – Try to reset the Network Configurations

Resetting the Network Configurations can also help you in fixing the Windows Wireless service as the network settings often get disrupted or corrupted in a variety of different cases every now and then. Note that this module will reset all the network settings stored on your computer.
  • Tap the Win + S keys to open Search and then type in “command prompt” in the field.
  • From the search results that appear, right-click on Command Prompt and select the “Run as administrator” option.
  • After opening Command Prompt, copy and paste the following command and hit Enter to execute it:
netsh winsock reset
  • The command given will reset the Winsock data. Once it is executed, restart your PC for the changes to take effect and then check if the internet connection is now fine.
Note: Do make sure that the WiFi drivers are up to date. To do that, follow these steps:
  • Tap the Win + R keys to launch Run.
  • Type in devmgmt.msc into the box and tap Enter or click OK to open the Device Manager.
  • After that, a list of device drivers will be displayed. If you see a red or yellow sign that shows up against the driver, right-click on the driver’s name and select “Update Driver Software” or “Uninstall”. And if you find any “Unknown device”, you need to update it as well.
  • Select the “Search automatically for updated driver software” option and then follow the instructions to complete the process.
  • Restart your PC.
Note: You also have the option to go directly to the website of your graphics card manufacturer and check if there’s a new update – if there is, download it.

Option 4 – Perform System Restore

Recently, a lot of issues have resurfaced after users installed the latest Windows update. So the wireless service issue might also be related to it. To fix the problem, you can perform System Restore to roll back your Windows to the last time when it was working just fine. It automatically creates backups in time whenever you install a new update or periodically. Follow the steps below to perform System Restore.
  • Tap the Win + S keys to open Search and then type in “restore” in the field and select the topmost result.
  • Once you’ve opened the restore settings, click on System Restore located at the beginning of the window under the System Protection tab.
  • After that, a wizard will appear that will guide you through all the steps needed to restore the system. You can choose either the recommended restore point or a different one.
  • After you select the restore point, click Next to proceed to the next on-screen instructions.
  • Then select the restore point where the Windows Update was installed on your computer. If you have more than one restore point, you can just select the latest restore point and check the functionality from there. If it doesn’t work, you can just try another restore point.
  • Another prompt will appear and will ask you to confirm your actions. Click OK and wait for the system to be restored. Once it’s done, check if the problem’s now fixed.
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How to Fix the TWCU.EXE Failed to Load Library File Error in Windows 10
The TWCU.EXE or TP-LINK Wireless Client Utility is a configuration application required to run wireless adapters successfully. The TP-LINK Wireless Client Utility application only exists on computers that are using the TP-LINK adapters. Upon the installation of this application, the service will be automatically added to the Windows service list that will continuously run in the background. The Twcu.exe is placed at the C:\Program Files\TP-LINKTP-LINK\Wireless Utility folder and is used by TP-LINK to connect to the internet. The name of the main executable file is twcu.exe and can be viewed in the Services tab of the Task Manager. If you are one of the users who just upgraded to Windows 10 from the previous Windows versions, then you’ll most likely see an error saying, “Failed to load the library file!” that has something to do with twcu.exe or TWCU. This error pops up when you go to your desktop and every time you log into your Windows 10 PC. Like pointed out, this error is related to the TP-LINK Wireless Client Utility and every user who is using the TP-LINK Wireless Client Utility is experiencing this problem which may be due to some compatibility issues especially when you start getting this error right after you upgraded to Windows 10. To fix this problem, follow each one of the options given below.

Option 1 – Try running in Compatibility Mode

The best thing you can do is to run the TP-LINK Wireless Client Utility in the compatibility mode since the problem is due to some compatibility issue. To run this utility in the compatibility mode, here’s what you have to do:
  • Look for the TP-LINK Wireless Client Utility which should be located on your desktop.
  • Once you find it, right-click on it and select Properties from the context menu.
  • After that, go to the Compatibility tab and mark the checkbox for “Run this program in compatibility mode for:” and from the drop-down list, select either Windows 7 or Windows 8.
  • Click the Apply button and then click OK to save the changes made and check if it has resolved the issue or not.

Option 2 – Try troubleshooting compatibility

This option is almost the same as the first one except it is an alternative way of fixing the TP-LINK Wireless Client Utility in case the first one didn’t work. In this option, you will troubleshoot the compatibility issue of the TP-LINK Wireless Client Utility.
  • Look for the TP-LINK Wireless Client Utility which as mentioned, is on your desktop.
  • Then right-click on it and select the “Troubleshoot compatibility” from the context menu.
  • After that, click on the “Try recommended setting” option. Once the process is done, the error message should be gone.
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Fix the System Restore Not Working Malfunction.

System Restore Not Working Malfunction.

What's program restore no longer working error?

The element of system restore is vital in the Windows operating system, and on occasions, it might be a genuine lifesaver. If for some reason you discover that the System Restore is not correctly functioning in Win7 or Windows 8 operating system:
  1. The points of system restore are not be being produced by hand or mechanically,
  2. You are unable to create by hand the restore points
  3. The system restore fails, and you're incapable of restoring your personal computer,
The subsequent are a few tricks that could allow you to solve this issue.

Solution

Restoro box imageError Causes

There are lots of variables that will trigger this malfunction in your Personal Computer. The remedy to the issue will depend on its cause. You ought to attempt the next actions in no sequence.

Further Information and Manual Repair

  1. Physically, strive to make Program Restore points. Subsequently, pay attention to the Error Messages(s) you receive. If none, check to see whether a restore point has been created.
  2. Eliminate the protection applications or anti-virus and then try creating a restore point.
  3. Startup the Computer in Safe-Mode. Oftentimes, non-Ms drivers or providers may restrict the smooth working for System Restore. The other viable choice, try a clean boot and see whether system restore is back to normal.
  4. Run file checker.  Quite simply, operate the sfc /scannow from the superuser command line. When the program record test is complete, restart your computer and assess whether system restore is operational.
  5. Run disk check as the administrator. Type chkdsk /f /r and subsequently push Enter. Allow this procedure to finish before attempting a system restore.
  6. Ensure the System Restore function is allowed in the drivers where you need this function allowed. For System Restore point to be saved, you must have free space of around 300 MB on each one of the devices which have the Program Safety perform turned-on.
  7. Ensure that there's adequate space on the drivers where System Restore performs is allowed.
  8. In the search box inside the Start Button, type "Services.msc" (with no quotes) and then push Enter. Ensure that at this time around Process Scheduler Service and the " Volume Shadow Copy " are correctly working, and are set on Automated mode. Make certain you start the System Restore service if it's not set place to automatic mode. Remember that you'll have to restart the computer in this process. Do this and subsequently try again, in case the system needs a reboot.
  9. In the search box, type eventvwr.msc /s subsequently push enter to open the Event Viewer. Double-click on the applications and Services Logs, then assess if you can determine the cause of the error.
  10. Could your network administrator have turned off the System Restore? Contact them. Ask them to re-activate system restore for your computer if they have switched it off.
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Fixing DRIVER_IRQL_NOT_LESS_OR_EQUAL Stop Error on Windows 10
If you’ve been using your Windows 10 PC for a long time now, you might have come across a couple of issues – from minimal ones to critical ones like the Blue Screen of Death or BSOD stop errors. One of these BSOD errors you can encounter is the DRIVER_IRQL_NOT_LESS_OR_EQUAL Blue Screen error. This particular BSOD error is caused by iaStorA.sys, iaisp64 sys, Netwtw04.sys, nvlddmkm.sys, ndis.sys, wrUrlFlt.sys, and other driver files on Windows 10. This error indicates that a kernel-mode driver tried to access pageable memory at a process IRQL that was too high. When you encounter this error, just like a typical BSOD error, your computer will abruptly stop and you will see a blue screen with an error message saying:
“Your PC ran into a problem and needs to restart. We’re just collecting some error info, and then we’ll restart for you. (100% complete) If you’d like to know more, you can search online later for this error: DRIVER_IRQL_NOT_LESS_OR_EQUAL (wrUrlFlt.sys)”
The iaStorA.sys file is a software component that’s related to the Intel Rapid Storage Technology by Intel. It is a software solution supported by Intel Smart Response Technology which allows the PC to communicate with the hardware as well as externally connected devices. The Intel Rapid Storage Technology enables the Peripheral Component Interconnect Express or PCIe storage support, serial ATA RAID or Redundant Array of Independent Disks 0, 1, 5, and 10 support, and the PUIS or power-up in standby is also supported. To resolve this kind of BSOD error, you have to update, roll back or fresh-install the problematic driver. Refer to the options laid out below for detailed instructions.

Option 1 – Try removing the Intel Rapid Storage Technology or IRST drivers

The first thing you can try is to fix the Wi-Fi driver or the Ethernet driver on your computer to resolve the BSOD error. Take note that this option works not only on Windows 10 but also other Windows versions.
  • Tap the Win + R keys on your keyboard to open the Run dialog box.
  • After that, type “devmgmt.msc” in the field and hit Enter or click OK to open the Device Manager.
  • After opening the Device Manager, click on the “IDE ATA/ATAPI Controller” entry and expand it.
  • Next, right-click on all the driver entries that are appropriately labeled, and then click on Uninstall device.
  • Now restart your PC and check if the problem’s fixed or not. If not, proceed to the next given option below.

Option 2 – Try updating the Intel Rapid Storage Technology or IRST drivers

If you’ve already tried uninstalling the IRST driver but you’re still getting the DRIVER IRQL NOT LESS OR EQUAL Blue Screen error when you use your Windows 10 PC, then this means that the drivers might be corrupted or not compatible with the operating system version that you are using right now. So to fix the problem, you have to update your drivers. To do that, follow the steps below.
  • The first thing you need to do is to go to your OEM’s website.
  • Once you’re already on the OEM’s website, go to the Drivers section and get the latest version for your device and then try to overwrite it.
Alternatively, you can also update the drivers via the Device Manager:
  • Tap the Win + R keys on your keyboard to open the Run dialog box.
  • After that, type “devmgmt.msc” in the field and hit Enter or click OK to open the Device Manager.
  • After opening the Device Manager, click on the “IDE ATA/ATAPI Controller” entry and expand it.
  • Next, right-click on all the driver entries that are appropriately labeled, and then click the Update driver option.
  • Now restart your PC and check if the BSOD error is fixed or not.

Option 3 – Try using the System File Checker via Command Prompt

System File Checker or SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files to good system files that might be causing the DRIVER IRQL NOT LESS OR EQUAL Blue Screen error. To run the SFC command, follow the steps given below.
  • Tap Win + R to launch Run.
  • Type in cmd in the field and tap Enter.
  • After opening Command Prompt, type in sfc /scannow
The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:
  1. Windows Resource Protection did not find any integrity violations.
  2. Windows Resource Protection found corrupt files and successfully repaired them.
  3. Windows Resource Protection found corrupt files but was unable to fix some of them.
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