How to Fix Error Code 1627

Blinking or Flashing Desktop After login - What does it mean?

Upon updating to Windows 10, some users might encounter a blinking or flashing desktop after logging in. This will result in a repetitive restarting of explorer or you won’t be able to make the start menu and shortcut keys work. In addition, the network icon might not appear in your taskbar as well. Other Windows 10 error messages include error code 0xc000021a.

Solution

Error Causes

Your blinking or flashing desktop after logging in might be the result of problems with the bushell.dll shell extension, which is a part of the Norton Security Suite. Another possible cause for this annoying problem is an issue with your display driver since not all systems will use the same display driver and will depend on what graphics card you use.

Further Information and Manual Repair

In fixing the bothersome blinking or flashing desktop after logging in problem, you can do a manual repair method to address the root problem. You need to be familiar with the Windows command line to successfully go through the process. However, if you are not knowledgeable or confident enough to do this on your own, it would be best to seek help from a professional. Or, you might want to consider using an automated tool to solve the issue.

You need to identify first what’s causing the blinking or flashing of your desktop after login to properly address the issue. The following methods can be done if your issue is caused by bushell.dll shell extension issue:

Method One: Forcefully Terminate Process

1. Press on Ctrl+Alt+Del then select Task manager
2. Start a Command Prompt as an administrator by choosing the File menu then Run New Task.
3. Type exe. Make sure to tick the checkbox “Create this task with administrative privileges.”

NOTE: Text input is most probably affected by the explorer restarts so you might need to repeatedly type some letters or to carefully input texts.

4. In the Command Prompt, type taskkill /f /im explorer.exe. This will stop the blinking or flashing.
5. Type cd “Program Files” afterward, type dir /s bushell.dll to locate where the dll is. (For example, purposes, use c:\program files\Norton Security Suite\Engine6422.5.2.15 as the location)
6. If the dll file is not found, you can try repeating step 5 but this time, use “Program Files (x86)” However, you can proceed with the next step if you already located where the bushell.dll is.
7. Type cd ”c:\program files\Norton Security Suite\Engine 6422.5.2.15” to change the name of the directory you found the dll in.
8. Type ren bushell.dll bushell-crash.dll
9. Restart now the system by typing shutdown /r /f /t o in the command line.

Method Two: Uninstall Programs

1. Log out then go to the sign in screen
2. Press the Shift key as you simultaneously click on the Power button on the screen.
3. Continue pressing on the Shift key as you click
4. Continue pressing on the Shift key as you wait for the Advanced Recovery Options menu to appear.
5. Once the Advance Recovery Options menu appears, click on Troubleshoot then select Advanced options.
6. Click on the Startup Settings then select
7. Boot on Safe Mode by pressing 4 on your keyboard.
8. Log in then press Windows key + X.
9. Select the Device Manager then expand Display Adapter.
10. On your Display Adapter, right-click then select
11. Exit Device Manager
12. If in case you also have an older Antivirus utility, you should uninstall it as well.
13. Restart

NOTE: You might need to download the latest Video Driver on a working computer. Save it in a thumb drive then copy and install it on your computer. If in case there is no native Windows 10 driver, you can also download the latest Windows 7 or Windows 8.1 video driver. Afterward, install it in compatibility mode.

Method Three: Use Microsoft System Configuration Utility

1. Log out then go to the sign in screen
2. Press the Shift key as you simultaneously click on the Power button on the screen.
3. Continue pressing on the Shift key as you click
4. Continue pressing on the Shift key as you wait for the Advanced Recovery Options menu to appear.
5. Once the Advance Recovery Options menu appears, click on Troubleshoot then select Advanced options.
6. Click on the Startup Settings then select
7. Boot on Safe Mode but this time, choose 5 to start in Safe Mode with networking.
8. Check if your problem is present or not in Safe Mode. If not, then you are on the right track.
9. Press on the Windows key + R then type msconfig to start up your exe file.
10. Click on the Services tab then choose Disable All. Afterward, click on
11. Once you’re prompted to reboot your computer, go ahead and reboot in Normal Mode. Check if the issue is still present.
12. If the blinking or flashing desktop after login is gone, then you can just do a process of elimination.
13. Start-up on your exe again then begin bringing up services a few at a time.
14. You can turn on all other services except for the following which causes the blinking or flashing desktop after login problem: Problem Reports and Solutions Control Panel Support •Windows Error Reporting Service.

I do not know about you, but I prefer to set my Windows to be more to my liking and not how Microsoft thinks it should be. Let’s face it, not all users feel comfortable whit Microsoft settings and idea how things should be. One of the things I particularly did not like even in Windows 10 is icons that come by default on my taskbar, now so far, well until the latest Windows 11 update you could remove default taskbar icons the same way as in Windows 10, just right-click on them and unpin, sadly with latest update build on Windows 11 this option has been removed. In order to remove default icons from the taskbar, one must go now to Windows 11 settings and choose from there which one you would like to be placed on it. Of course, this is nothing game-breaking but it still feels strange why the standard option has been removed, it just makes no sense but lately not many things that come from Microsoft do. I do not know about you, but I prefer to set my Windows to be more to my liking and not how Microsoft thinks it should be. Let’s face it, not all users feel comfortable whit Microsoft settings and idea how things should be. One of the things I particularly did not like even in Windows 10 is icons that come by default on my taskbar, now so far, well until the latest Windows 11 update you could remove default taskbar icons the same way as in Windows 10, just right-click on them and unpin, sadly with latest update build on Windows 11 this option has been removed. In order to remove default icons from the taskbar, one must go now to Windows 11 settings and choose from there which one you would like to be placed on it. Of course, this is nothing game-breaking but it still feels strange why the standard option has been removed, it just makes no sense but lately not many things that come from Microsoft do.

Error 0x800706be is a Windows error code that pops up when a particular system file is having some issue. This error pops up on other Windows-compatible software as well as driver vendors. This error signifies a misconfigured or corrupted system file so you might encounter this error in different instances. For instance, this error might pop up when you click the audio icon from the system tray or when the Windows Upgrade or Update has failed. Needless to say, this error can be caused by different factors. Anyhow, this post will show you what you can do to fix the problem when the error pops up during a Windows Update or Upgrade. If you are seeing this error when you try to install the latest Windows updates, it will show a Windows Update failed message and you obviously won’t be able to update your Windows 10 PC until you fix this error. You will keep seeing this error even when you try to reboot or update it a couple of times. As mentioned, the error code 0x800706be appears when there is something wrong with your system files – they are either corrupted or misconfigured. This error is most likely caused by the corrupted Windows Update Components. Corruption of these files is not unusual and it could happen anytime. So since the Windows Update files or components are corrupted, you won’t be able to successfully install the latest Windows Updates. Here are some options you can try to fix the problem.

Option 1 – Try running the Windows Update Troubleshooter

Running the Windows Update troubleshooter is one of the basic things to do when facing any kind of issue with Windows Updates. As long as it can it will detect the issue and automatically solve them so that there will be no need for you to do more technical steps to resolve the issue.

• Tap the Windows and R keys on your keyboard to open the Run dialog box.
• Then type in “control.exe /name Microsoft.Troubleshooting” in the field and tap Enter to open the Windows Update Troubleshooter.
• After that, click Windows Update and follow the next on-screen instructions.

Option 2 – Try resetting the Windows Update Components

This is another basic thing to do in fixing the error 0x800706be. It is also one of the solutions that mostly worked for users who also got this error when trying to install Windows updates. And since the problem is caused by corrupted Windows update components, the most logical thing to do is to delete old files and reset components. To reset the Windows Update components, follow the given instructions below carefully.

• Tap the Windows key once.
• Then in the Windows Start Search, type in “command prompt”.
• From the search results displayed, right-click on Command Prompt and select the “Run as administrator” option.
• After that, type in “net stop wuauserv” and tap Enter.
• Next, type in “net stop cryptSvc” and tap Enter.
• Then type in “net stop bits” and tap Enter.
• Type in “ren C:\Windows\Software\Distribution Software\Distribution.old” and then tap Enter.
• Afterward, type in “C:\Windows\System32\catroot2\Catroot2.old” and tap Enter.
• Next, type “net start cryptSvc” and tap Enter.
• Then type “net start bits” and tap Enter.
• Finally, type in “net start msiserver” and tap Enter.
• Now close Command Prompt and then try updating Windows once more.

This post will guide you in fixing high CPU, Memory, and Disk usage problems caused by NTOSKRNL.exe. NTOSKRNL stands for “NT Operating System Kernel. This file is a kernel image that is responsible for a lot of systems-based processes such as Hardware Virtualization, Process, and Memory. Aside from that, it is also the one that compresses the old pages of memory that reduces the overall amount of memory being used. If you notice that your computer is running slowly and you find that the NTOSKRNL.exe file is hogging your resources such as disk usage, CPU usage as well as memory usage, then read on as this post will guide you in fixing the problem caused by NTOSKRNL.exe. Make use of the options given below to resolve the issues caused by NTOSKRNL.exe. 1] Scan your computer for potential malware There might be a good chance that your computer might be infected with malware. And this malware might be associated with the NTOSKRNL.exe file and hence making it consume a lot of system resources. So, I would really recommend you to make sure that your Antivirus is up to date and then scan your computer with it specifically the C:/Windows/System32 folder because this is the location where the NTOSKRNL.exe file is located.

Option 1 – Put your computer in a Clean Boot State

The first thing you have to do is to put your computer in a Clean Boot State as this can help you in finding any incompatible programs that are causing the problem.

• Log onto your PC as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” check box and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” check box.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
• From there, start to isolate the problem by checking which one of the programs you installed recently is the root cause of the problem.

Once you’ve found any incompatible programs, you need to uninstall them. Refer to the steps below to do so.

• In the search box, type in “control” and then click on Control Panel (desktop app) among the search results.
• After that, select Programs and Features from the list which will give you a list of all the programs installed on your computer.
• From there, look for the concerned program and select it and then uninstall it.

Note: If you have downloaded the app from the Windows Store, you can simply right-click on it from the application list and then uninstall it.

Option 2 – Update or rollback drivers

If the first option didn’t work for you, then it’s time to either update or roll back the device drivers. It is most likely that after you updated your Windows computer that your driver also needs a refresh. On the other hand, if you have just updated your device drivers then you need to roll back the drivers to their previous versions. Whichever applies to you, refer to the steps below.

• Open the Devices Manager from the Win X Menu.
• Then locate the device drivers and right-click on them to open the Properties.
• After that, switch to the Driver tab and click on the Uninstall Device button.
• Follow the screen option to completely uninstall it.
• Finally, restart your computer. It will just reinstall the device drivers automatically.

Note: You can install a dedicated driver on your computer in case you have it or you could also look for it directly from the website of the manufacturer.

Option 3 – Try to run the DISM tool

If the first two options didn’t work, then running the Deployment Imaging and Servicing Management might. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth”.

• Open the Command Prompt with admin privileges.
• Then type in the following commands and make sure to hit Enter right after you type each one of them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • exe /Online /Cleanup-image /Restorehealth
• Do not close the window if the process takes a while as it will probably take a few minutes to finish.

Option 4 – Try to stop the Runtime Broker process

The RuntimeBroker.exe or the Runtime Broker process is the one that monitors access to Windows APIs to make sure that the apps do not violate the core security of Windows. This process usually leaves a very small footprint. However, there are times when it consumes more resources than it’s supposed to and does not release memory after the work is done that results in a memory leak. As a result, it affects NTOSKRNL.exe which is why you have to stop the Runtime Broker process. To do so, refer to these steps:

• Tap the Ctrl + Shift + Esc to open the Task Manager.
• After opening Task Manager, go to the Processes tab and look for the Runtime Broker process.
• Once you find it, check if it is using more than 15% of your memory. If it is, then you most likely have an issue with an app installed on your computer.
• Select the Runtime Broker process and right-click on it and then click on the End Task option to end its process.

Option 5 – Try to run the Performance Troubleshooter

• Tap the Win + R keys to open the Run dialog box.
• Type “msdt.exe /id PerformanceDiagnostic” in the field and hit Enter to open the Performance troubleshooter.
• Then click on Next to get started. Wait until the process is completed.

Option 6 – Try using the Windows Performance Toolkit

You can also use the Windows Performance Toolkit in finding the root cause of the problem. Just refer to the following steps to use this toolkit.

• Search for “cmd” in the Cortana Search box and click on Command Prompt from the search results to open it.
• Next, type in the command given below or copy and paste it and then hit Enter:

xperf -on latency -stackwalk profile -buffersize 1024 -MaxFile 256 -FileMode Circular && timeout -1 && xperf -d cpuusage.etl

• After executing the command, wait for at least 60 seconds and then check the logs of the Windows Performance toolkit which is stored in a file named cpuusage.etl in the folder located at C:/Windows/System32. From there, you should see a list of all the causes of the System Resources being hogged.

Error Code 0x80072F8F - What is it?

Error Code 0x80072F8F manifests in one main way. It is known to appear as early as Windows 7, and mainly deals with an error that occurs in the update process, or when the computer is trying to connect to the online activation service. It can appear when the activation fails to verify the product key. The error code will present itself when the system realizes that the PC's date and time are incorrect. Error Code 0x80072F8F will also appear if the computer has determined that the time zone settings on the computer are not accurate.

When Windows is going through the installation process and is verifying all of the information associated with the computer, Error Code 0x80072F8F will arise, indicating that the information in the computer's settings is not valid. Correct times and dates are necessary when using serial validation keys to install Windows. When these settings are outside of the tolerated window, the problem will arise.

Error Causes

There is only one main symptom to look out for, and it will manifest during a Windows installation. In the midst of the installation, the computer will not be able to proceed with the installation if Error Code 0x80072F8F has popped up. Because the information cannot be verified, Windows will not be able to continue the installation process when the time settings are not accurate. This interrupts the process, causing the need to edit the settings, restart the computer, and try again. It is imperative to be sure that the date and time on the computer are inside of the tolerated window for the serial key.

• This error code will not give any information on how to correct it.
• Windows Error 0x80072F8F is displayed on the screen.
• The error code appears when typing the Windows serial key and proceeding.

Further Information and Manual Repair

When experiencing Error Code 0x80072F8F, the date and time need to be corrected in the computer settings menu, and then verify the correct time zone settings.  There are a few different ways to edit the time and date settings, and one may need to even edit the time zone settings. After this, restarting the computer may be needed. When booting into Windows, the validation code should be activated within 30 days of obtaining the serial number.

• Method One

Check the time and date settings.

1. Open the Start menu.
2. Select Settings, then Time and Language, then Date and Time.
3. Check and make sure that the PC is operating at the correct time and date.

• Method Two

Ensure that the computer is connected to the internet.

1. Enter “network troubleshooter” into the search box located on the taskbar.
2. Select “Identify and Repair Network Problems”.
3. Follow the instructions that are given on-screen. This will fix any problems that the network is experiencing.

• Method Three

Review the timezone.

1. Open the Start menu.
2. Select Settings, then Time and Language, then Date and Time.
3. Check to make sure that the correct timezone is selected from the drop-down menu.

• Method Four

Reboot the PC and check if that fixes the problem. This may help in the event that the network troubleshooter does not detect a problem.

After completing these steps to edit the time, date, and time zone settings, it may be necessary to restart the computer. This is to ensure that the computer will save and recognize the new settings. After restarting, continue the process as intended and enter the product key. The computer will now be able to verify the product key since the time and date will be recognizable. The Windows installation should proceed as normal and complete successfully when the time, date, and time zone are inside of the parameters for the Windows product key.

In short, if it is not, the computer will not be able to recognize the product key, thus will not be able to install the Windows product. Generally, the fix is quite simple and does not take much time at all, but it is very important.

The network driver error is a not serious Windows issue.  It happens from time to time and luckily it can be solved with a little effort and in a short time period. Today in this article we will explore the most common solutions for driver malfunction for Network adapter inside Windows 10. If you have this particular problem, go from step 1 to the last step since all steps are meant to go from simplest to the most complex. All of that being said let us fix your Network driver issue.

1. Check to see if the cable is plugged in and not malfunctioned

   The first common issue of the network now working can be cable malfunction or bad contact in your network adapter or in HUB/SWITCH. There are various tools to check the quality and working order of cable but you could also make sure that it is not a cable issue by trying connection with the correct working cable. If the network is restored with another cable then change the malfunctioning cable and your issue is resolved if the problem persists move to the next step.

2. Check if Windows troubleshooter will resolve the issue

   Righ-click on the network icon in the taskbar and choose to troubleshoot problems. Windows built-in tools could resolve issues and fix them for you. If by any chance Windows is not able to find or resolve issues move to the next step.

3. Check if the Device Manager is reporting an error and update the driver

   If the hardware is functioning properly then the issue might be in Windows not detecting device or driver malfunction. In any case, the Device Manager will be the one who will report this problem. In order to check to see if the driver is properly working press ⊞ WINDOWS + X to open the hidden start menu. Once it opens, click on Device Manager to open it, If you have a driver device error inside Windows, you should see it immediately when entering the Device Manager, it will have a yellow exclamation mark beside it. Right-click on it and choose update driver.

4. Reinstall driver

   If driver update failed or you already have the latest drivers, reinstalling them could fix the issue since drivers might have corrupted during installation of some update or application. Follow steps from point 3 to get to the driver in Device Manager, then right-click on it but instead of update choose to uninstall. Reboot Windows once the driver is uninstalled and Windows will install a new one automatically. If you do not want to update drivers automatically, do not restart your system, instead install the latest driver for your device, then reboot. Since this is a network error, you will have to get drivers on another computer and transfer them via USB to malfunctioning one.

5. Check Windows update

   Check to see if the latest Windows update is installed, update your Windows if needed

6. Fix driver issue with DRIVERFIX

   If everything else fails, get DRIVERFIX, a premium solution for your PC issues, and fix driver errors.

There are times when we delete a system files without meaning to on your Windows 10 computer. This happens a lot for users sometimes mistake a system file for a malware-laden file or junk file when it’s actually a system file from the System32 or SysWOW64 folder. In such cases, it could affect your computer. For instance, you might not be able to reboot your PC or open Settings. If you have removed system files from any of these folders by accident and you desperately want to restore them, read on, as this post will guide you in resolving the problem. Restoring them isn’t actually hard, just make sure that you have system admin access. The good thing is that there exists Windows Resource Protection which protects registry keys and folders and even critical system files. So if there are any detected changes to a protected system file, the modified file is restored from a cached copy located in the Windows folder. However, if the Windows Resource Protection program fails to restore these files, you need to check out the given fixes below.

Option 1 – Run System File Checker scan

To restore the system files you deleted, you can try running System File Checker or SFC scan. System File Checker is a command utility built into your computer that helps restore corrupted files and missing files. Refer to the following steps to run it:

• Boot your PC into Safe Mode.
• Hit the Win + R keys 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 while 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.

• Reboot your computer.

Option 2 – Try to run the DISM tool

Aside from System File Checker, you can also run the DISM or Deployment Imaging and Servicing Management Tool as it could help in restoring the system files on your Windows 10 computer. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth” which could help you resolve the problem.

• Open the Command Prompt with admin privileges.
• Then type in the following commands and make sure to hit Enter right after you type each one of them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • exe /Online /Cleanup-image /Restorehealth
• Do not close the window if the process takes a while as it will probably take a few minutes to finish.

Option 3 – Try performing a System Restore

Running System Restore can also help you bring back the system files. You can do this option either by booting into Safe Mode or in System Restore. If you are already in the Advanced Startup Options, just directly select System Restore and proceed with the next steps. And if you have just booted your PC into Safe Mode, refer to the steps below.

• Tap the Win + R keys to open the Run dialog box.
• After that, type in “sysdm.cpl” in the field and tap Enter.
• Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
• After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.

Option 4 – Try to run Automatic or Startup Repair

Startup Repair, previously known as Automatic Repair, is an advanced tool in Windows that can help you diagnose various system issues, including this one. This tool will scan system files, configuration settings, registry settings, and so on in order to fix the problem on its own. To run Startup Repair, all you have to do is boot into the Advanced Startup Options and then go to Troubleshoot > Advanced option > Startup Repair and then run it. This will resolve the problem if you have deleted any system file that’s essential to your Windows 10 PC.

Option 5 – Reset your computer

• 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.

A general rule of thumb, which is followed by most users, is to download the specific missing DLL file and place it within the software’s installation directory. However, this can be harmful to your system as hackers often upload popular malicious DLL files to target systems. Thus, you should avoid downloading DLLs from the internet. And follow these steps to fix the DLL error:

• Restart your computer
• System restore to an earlier state
• Run a malware/virus scan
• Update all the hardware drivers
• Running SFC /scannow command in command prompt
• Then do as the error suggests, reinstall the program if it’s feasible. Game files can take several hours to install and therefore, reinstallation can be a cumbersome job. Also, frustrating if the error appears after reinstallation.
• Update device drivers manually, such as graphics drivers, DirectX software if you see DLL missing error while running game

Stop C00002lA Fatal System Error- What is it?

C00002lA Fatal System Error is a blue screen of death error that may occur when you start your Windows NT 4.0 based computer. This error causes the screen to turn blue and the system also shuts down. The stop C000021A error message is displayed in the following format:

Stop c000021a {Fatal System Error} The session manager initialization system process terminated unexpectedly with a status of 0xc0000017 (0x00000000, 0x0000000) The system has been shut down.

Error Causes

The stop C000021A error occurs when either Crsrss.exe or Winlogon.exe fails. When the Windows NT kernel identifies that either of these processes has failed, it stops and the error code stop C000021A appears on the computer screen. Here are some of the underlying causes for the stop C0000021A error:

• The incompatible third-party program
• Hard disk issues
• Service pack installation has failed
• Mismatched system files have been installed
• Bad and invalid registry keys

Further Information and Manual Repair

To resolve the stop C000021A Fatal System Error on your PC try the following solutions:

• Remove Incompatible Third Party Programs

If the error occurred after you recently installed a new program, then it is advisable to remove that program. The error occurs due to the incompatibility of the program. To remove the program go to the start menu and click on the control panel. Now click on Add/Remove Program tab and double click on the program name that you recently installed and remove it from the list. Once removed, not reboot your PC. Reinstall a compatible program and run it. It is most likely to resolve the issue. However, if the stop C000021A error still occurs, then it means the problem is critical. It is related to the registry.

• Repair and Restore the Registry

This procedure is slightly long and tricky. To try it, you need to be technically sound. Here’s what you have to do: first create a parallel installation of Windows NT. Start your PC to the parallel installation and then open the Registry Editor. On the Registry Editor’s Windows menu click HKEY_LOCAL_MACHINE on Local Machine and then click Load Hive. Now type the path %systemroot%system32configsystem into the System hive of the prior installation. Then click open. Here you will be prompted to enter the name of the key, type TEST. Note the setting for the current DWord value in the preceding registry key. This is 0x1 and is denoted by CURRENT:Reg_Dword: 0x1. This value indicated that the Current Control Set for your original Windows NT installation corresponds to ControlSet001 in this window. Now if the value is 2, it indicated that the Current Control Set corresponds to ControlSet002. Now locate the following registry key: HKEY_LOCAL_MACHINETESTControlSetXXXControlSession Manager. XXX is the Current Control Set Value. And delete any pending file rename operation entries. Then click TEST hive and then click Unload Hive. After that again repeat the process, open the registry menu and click load hive, here type the path %systemroot%system32configSoftware to the Software hive of the prior installation and then click open. Now you type TEST 2 when you are prompted for the name of the key. Remove any pending file rename operations entries in the following registry keys: HKEY_LOCAL_MACHINETEST2MicrosoftWindowsCurrentVersionRunOnce HKEY_LOCAL_MACHINETEST2MicrosoftWindowsCurrentVersionRunOnceEx Now click TEST2 hive and then click unload hive. Quit the Registry Editor and then restart your original installation. This will resolve the stop C000021A error.

If you suddenly encounter an error message that says, “This webpage is not available, Err_Connection_Closed” while browsing the internet or visiting a website and the website fails to load, then it means that there is some problem with your network connection. Similarly, you may also get other error messages like “Err_Network_Changed”, “Err_Connection_Reset” and “Err_Internet_Disconnected” errors in different browsers like Chrome, Firefox, and Edge. The problem lies in your Windows 10 computer and your internet connection since this is a network issue. So before you troubleshoot the problem using the suggestions given below, you need to refresh your browser first or you could also tap Ctrl + F5 on your keyboard to hard reload the webpage. If you’re still getting the same error message, then proceed to the guide below.

Option 1 – Try removing the Proxy

Removing the Proxy might also help you in fixing the “This webpage is not available, Err_Connection_Closed” error. Here’s how you can do it:

• 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 2 – Try using Google Public DNS

If the first option didn’t resolve the issue, you can try to use the Public DNS by Google and see if it can help fix the problem. You have to modify the DNS settings in your system explicitly and use the DNS IP addresses.

• The first thing you have to do is right-click on the network icon in the Taskbar and select Network and Sharing Center.
• Next, click on the “Change Adapter Settings” option.
• After that, search for the network connection that you are using to connect to the internet. Note that the option might be “Wireless Connection” or “Local Area Connection”.
• Right-click on your network connection and click on Properties.
• Then select the new window to choose the “Internet Protocol 4 (TCP/IPv4)” option.
• After that, click on the Properties button and click the checkbox in the new window for the option “Use the following DNS server addresses”.
• Type in “8.8.8.8” and “8.8.4.4” and click OK and exit.

Option 3 – Reset Winsock, TCP/IP & Flush DNS

Resetting Winsock, TCP/IP, and flushing DNS might help you resolve the Err_Connection_Closed error. To do so, follow these steps:

• Right-click on the Start button and click on Command Prompt (administrator) so you can pull up an elevated Command Prompt.
• After that, execute each one of the commands listed below. And after you typed in one after the other, you have to hit Enter.

1. netsh winsock reset – type in this command to reset Winsock
2. netsh int ip reset resettcpip.txt – type in this command to reset TCP/IP
3. ipconfig /flushdns – type in this command to flush the DNS cache

• Next, restart your PC and check if the problem’s fixed.

Option 4 – Disable both the Antivirus program and Firewall temporarily

There are times when antivirus programs and the firewall blocks a website that they consider to be malicious or even because of false-positive effects which is why you have to disable these programs temporarily as it might be the reason why you’re getting the “This webpage is not available, Err_Connection_Closed” error when trying to browse the internet.

Option 5 – Try to check the network cables and then restart your router

The most obvious thing you can do first is to try checking if the network cables connected to your computer or router are properly connected or not. If it turns out that some network cables are not connected properly, then it’s probably why you’re getting this error.

Option 6 –Try a Network Reset

When all else fails, you might have to consider resetting your entire network settings. Simply follow the steps below to do so.

• Click on the Start button and then click on the gear-like icon for Settings to open it.
• Next, select Network and Internet.
• Then scroll down and look for “Network Reset” – click on it and then click on the Reset now button.