Fix Err_Connection_Closed in Windows

Code 21 - What is it?

Code 21 is a Device Manager error code that appears when you try to use a hardware device attached to your computer and the Windows prohibits you from using it.

This is due to the Windows experiences problems loading the device driver. This error message is displayed in the following format:

“Windows is removing this device. (Code 21)”

Solution

Error Causes

Error code 21 means that Windows is in the device removal process and the device has not been completely removed. It occurs when you set a device to be removed and then select the same device to run on your system.

Upon your instructions, Windows start to remove that device and when you on the other hand try to use/access the same device that you selected for removal, it kicks up Code 21.

Further Information and Manual Repair

If you are experiencing error code 21 on your PC, it is advisable to resolve it immediately.

Though this error will not damage your system, but will significantly lower the performance of your PC which is definitely something you don’t want especially if you work on your computer daily and use it to perform important time-sensitive errands.

To repair and resolve, try the methods given below:

Method 1 - Wait for a Few Seconds and Then Press F5

This is one of the best and easiest ways to resolve code 15 on your system. Wait for a few seconds, and then press the F5 key. This will update the Device Manager view and the error will most probably go away.

Method 2 - Restart Your PC

Sometimes error codes may pop up due to temporary glitches. To resolve such errors, a simple reboot of your PC is enough. Shut down Windows and then restart your system.

This is most likely to resolve Code 21. However, if the error still persists then this means the underlying problem for code 21 is deeper than you think. Try method 3 to resolve.

Method 3 - Install DriverFIX

As mentioned earlier, the error code 21 may occur if you have selected a device to remove and then you try to reuse it.

To resolve, you may have to install the device again and the driver for that the reinstalled device. To reinstall the driver without any hassle, simply download DriverFIX.

It is a smart, user-friendly, and intuitive software program designed to resolve driver problems. The program is embedded with intelligent device identification technology which:

• Automatically detects all the appropriate system drivers
• Matches them with the latest available versions
• And then updates drivers according to their compatible versions on a regular basis

Furthermore, it enables accurate installation and ensures that your system is running at its optimal speed.

Other features that this program boasts are full backup and restoration, safe USB management, and ejection.

If nothing works, you can try the full backup and restoration feature and restore your PC to its previous state when it was functioning properly before the error occurred.

DriverFIX creates a backup of all your files and data hedging keeps you from disasters like data loss. It restores the system to the time when it was working properly.

Click here to download DriverFIX on your system and resolve error code 21 today.

If you encounter the MUP_FILE_SYSTEM Blue Screen error with a value of 0c00000103, then it indicates that the multiple UNC provider or MUP has got an invalid of unexpected data. This can lead to the fact that the MUP cannot channel a remote file system request to a network redirector, the UNC, or Universal Naming Convention provider. There are several ways you can fix the MUP_FILE_SYSTEM Blue Screen Error on your Windows 10 computer, you can try to check the hardware of your computer physically, update or rollback some device drivers, run the Driver Verifier Manager, remove any hardware you’ve installed recently or fix issues related to IRQ. Use the given options below as reference to fix the MUP_FILE_SYSTEM Blue Screen Error.

Option 1 – Try to physically check the hardware

The first thing you can do is to check the physical status of the hardware in your computer. You can clean the dust off the hardware components like the Network Card of the computer. You might want to use a small blower or you could also use a soft cloth and run the components gently. Make sure that you don’t damage any parts with moisture or cause harm to any circuits while you carry out this task.

Option 2 – Try to rollback, update several device drivers

You can try to roll back, update or disable certain device drivers on your computer to resolve the MUP_FILE_SYSTEM Blue Screen error.

• First, boot your computer into Safe Mode.
• After that, 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. From there, look for the device drivers related to the Network Card, Chipset, Disk Drive, and the Graphics Drivers and any other driver related to MUP.sys and SwapBuffers.sys system files
• After that, right-click on each entry of the device drivers and select the “Update Device” option from the menu.
• Now follow the next on-screen instructions that appear and then restart your computer.
• After restarting your computer, check if the Stop error is now fixed.

Option 3 – Configure the Driver Verifier Manager

The Driver Verifier Manager is another tool in Windows that could help you fix driver-related issues. And so if you want to fix the MUP_FILE_SYSTEM Blue Screen error you need to use the Driver Verifier Manager:

• Type in the keyword “Verifier” in the Cortana search box to search for Verifier in Windows 10.
• After that, select the option “Create custom settings”.
• Make sure that you have checked everything except the options “DDI compliance checking” and “Randomized low resources simulation”.
• Next, select the option “Select driver names from a list” option.
• Afterward, you have to select all the drivers from any unofficial or third-party provider. To simply put it, you have to select all the drivers that are not supplied by Microsoft.
• Then click on the Finish button.
• Open Command Prompt as administrator and execute this command – verifier /querysettings
• The command you just executed will display the Driver Verifier settings so if you see any of the flags enabled boot your Windows 10 PC into Safe Mode.
• Open the Command Prompt as admin again and run this command – verifier /reset
• The command will reset the Driver Verifier. Once the process is done, restart your PC and check.

Option 4 – Try to disconnect or disable newly installed hardware

In this option, you will have to disable or remove the hardware you’ve just installed recently since external devices could be the one that’s causing the Blue Screen of Death error to appear. To do that, just disconnect any external device that’s connected to your computer physically and then check if it fixes the MUP_FILE_SYSTEM Blue Screen error.

Option 5 – Try fixing IRQ-related issues

The Stop error might have something to do with an issue related to IRQ. You can verify it by switching your PCI Cards around. Aside from that, you can also check if the IRQ2 is assigned to a COM Port that is unavailable at that time.

Option 6 – Run the Blue Screen Troubleshooter

The Blue Screen troubleshooter is a built-in tool in Windows 10 that helps users in fixing BSOD errors like MUP_FILE_SYSTEM. It can be found in the Settings Troubleshooters page. To use it, refer to these steps:

• Tap the Win + I keys to open the Settings panel.
• Then go to Update & Security > Troubleshoot.
• From there, look for the option called “Blue Screen” on your right-hand side and then click the “Run the troubleshooter” button to run the Blue Screen Troubleshooter and then follow the next on-screen options. Note that you might have to boot your PC into Safe Mode.

Option 7 – Perform a System Restore

Performing System Restore might help you in fixing the Blue Screen error. 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.

Error Code0x80070426 - What is it?

When Windows evolved into Windows 10, the program known as Windows Security Essentials is no longer. It is now the program known as Windows Defender. When a computer is upgraded from a previous version of Windows up to Windows 10, the Windows Defender takes over and will replace the Security Essentials. In a small percentage of Windows 10 upgrades, something will go wrong and the new program will fail to replace Security Essentials. The result will be that the operating system has both of the programs installed. In this case, Windows Defender will not offer any protection and Security Essentials will not be able to defend either. This error code will also present itself when the Windows Mail App in Windows 10 fail to retrieve and sync email from the user's account.

Common symptoms include:

• There will be an error message that says: “An error has occurred in the program initialization. If this problem does continue, contact your System Admin. Error code 0x80070426.”
• The computer will be left completely vulnerable to spyware and viruses.
• The Windows Mail App will not be able to retrieve mail and will not sync with the PC user's mail.
• The user can be doing anything on their computer and the error code will show up unprompted.
• The computer will lock up, become slow, crash, or even freeze when dealing with error code 0x80070426.
• The programs from an older version of Windows do not replace the newer version from Windows 10.

Solution

Error Causes

Error code 0x80070426 will present itself when a PC user has upgraded their OS from a previous version of Windows to the new Windows 10 version. When this happens, a small portion of users will experience the disconnect between older versions of specific programs, namely the virus protection. When the previous version of the program under a different name is not completely removed and the new virus protection program is installed, the programs will cancel each other out and collectively offer no protection.

This error code may also be found when Windows 10 tries to sync the user's email with the Windows Mail App.

Further Information and Manual Repair

There are a few methods to repair this problem. It should be noted that should anyone feel that the instructions are too complicated, they should contact a Windows repair technician to ensure that the error is fixed properly.

Method One: Uninstall Microsoft Essentials

Hold down the Windows Key and press R. Type in taskmgr into the run dialogue. You should locate the Windows Defender Service (this may show up as Windefend). Right-click on it and then choose Stop.

This will stop the program, but the program will start back up automatically when the computer restarts. While this program is stopped, uninstall Essentials.

To do this: go to Control Panel, Programs, and Features, Uninstall a Program. Alternately, you may hold down the Windows Key and press R, type in appwiz.cpl, click OK, and then locate Microsoft Essentials. Uninstall it, and then restart your computer.

After this is done, go to Settings, Update, and Security. Choose Windows Defender and ensure that Real-time protection is on. Refer back to the Task Manager, Services. Make sure that Defender service is on and running.

Method Two: If the problem occurs in the Windows Mail App

When error code 0x80070426 presents itself in the form of an error with the Mail app, it may be necessary to run an SFC scan.

Right-click on the Start menu or Windows icon, and select Command prompt. The command prompt may be navigated by using shortcut keys Win and X and then select it.

Run the command prompt and then type in sfc /scannow and then press enter. The SFC scan will be run, and be careful not to abort the process before it has finished. This will scan for any files that are lost or corrupt on the PC.

If the scan has found any corrupt files, type in this code and then hit Enter: findstr /c:”[SR]” %windir%LogsCBSCBS.log >”%userprofile%Desktopsfcdetails.txt.

To skip the repair of corrupt or missing files, type in: Dism /Online /Cleanup-Image /RestoreHealth. The details of the scan can be found on the sfcdetails.txt file that will be on the desktop.

Method Three: Use An Automated Tool

If you wish to always have at your disposal a utility tool to fix these Windows 10 and other related issues when they do arise, download and install a powerful automated tool.

Error 103 - What is it?

The error 103 may occur either due to issues in your Google Chrome browser or system issues. If error 103 occurs when using Chrome, this means there is a conflict between Google Chrome and the antivirus program running on your PC. It is displayed in either of the following formats: ‘Chrome error 103 connection aborted’, ‘Chrome error 103 err_connection_aborted’ or ‘Error 103 (net: ERR_CONNECTION_ABORTED): Unknown error. However, if this is a system error code, it may be displayed in the following format ‘The semaphore cannot be set again’ or as ‘ERROR_TOO_MANY_SEM_REQUESTS’ or as the value 0x67.

Solution

Error Causes

The error 103 is triggered due to multiple reasons such as: The conflict between Google Chrome and anti-viruses arises because when the web browser attempts to update, the anti-virus programs on your PC may view the update as a threat. Due to this, the connection to the internet is terminated and the error 103 message is displayed on your computer screen. And besides, this keeps you from upgrading your Google Chrome browser too. Other causes include:

• Viral infection
• Missing Windows component called ‘expand.exe’
• Registry overlaps
• Incompatible drivers

Further Information and Manual Repair

Here are some of the easy and efficient ways to resolve error 103. Choose a method according to the error 103 messages displayed on your screen.

Method 1: Check for the ‘Expand.exe’ Windows component

This method is workable if the error 103 is triggered due to browser issues. To get started, follow these steps. First, go to the start menu, and in the search bar type ‘expand.exe’. If you are able to find it, move it to the following directory C:\Windows\system32. However, if you are unable to locate it, then copy the file from Windows installation CD. Once you copy the file to the directory, reinstall the updated version of Google Chrome.

Method 2: Change the Location of the Temporary File

If the error still persists, try method 2. Go to the start menu and open the Run window. Now type C: and press OK. Then go to File, then New, and then Folder. Now create a temporary folder and name it ‘test’. After that go back to the start menu and open the Run window again. Now enter the following text in the text field:cmd.exe then press OK. In the command prompt type set TMP=C:\test. After that try reinstalling Google Chrome by typing the following in the command prompt: start ChromeSetup.exe.

Method 3: Update Drivers

If the error message 103 is generated due to system issues, then try updating drivers. Sometimes the error may occur due to incompatible drivers.

Method 4: Perform an Entire PC Scan for Viruses

To resolve error 103, perform an entire PC Scan for viruses. Sometimes the error may occur due to viral infection. Removing viruses may fix the error.

Method 5: Clean and Restore the Registry

If the error is triggered due to registry issues, then it is advisable to download Restoro. This is a multi-functional PC repair tool integrated with powerful utilities including an anti-virus, a registry cleaner, Active X controls, and class scanner, and a system optimizer. The registry cleaner feature wipes out all the unnecessary files including cookies, junk files, and bad registry keys that corrupt the registry. It cleans and restores the registry instantly. The anti-feature removes all viruses and spyware while the system optimizer utility ensures your system works at its optimum speed. It can be downloaded on all Windows versions. It is safe and efficient. This software is a one-stop solution for all PC-related errors. Click here to download Restoro.

When trying to run Computer Management, or when running mmc.exe or compmgmt.msc from a command prompt you get the error that the application has been blocked for your protection then keep reading in order to solve the issue. This is a permission issue where if a regular user tries to run such system tools will result in saying that it has been blocked. Along with this, you may have a Group Policy issue. This can be fixed, but you will need admin permission to achieve it. It’s because when they are run from the command prompt with elevated privileges, it works.

1. Change Group Policy Settings

   If your account is an admin account, and you are still facing the issue, then change the group policy settings: Open Group Policy Settings by typing gpedit.msc in the run prompt followed by pressing ENTER Navigate to User Configuration > Administrative Templates > Windows Components > Microsoft Management Console > Restricted/Permitted snap-ins Locate Computer Management policy, and double click to open it Enable it, exit Group Policy. When Enabled: The snap-in is permitted and can be added into the Microsoft Management Console or run from the command line as a standalone console. When Disabled: The snap-in is prohibited and cannot be added into the Microsoft Management Console or run from the command line as a standalone console. An error message is displayed stating that the policy is prohibiting the use of this snap-in.

2. Temporarily disable UAC

   UAC is the user access control panel, and if you need to run the command right away, you can choose to disable it for some time. Click on the Start button, and then type UAC to find the User Account Control Settings. Click to open, and then slide down the notification setting at the bottom. It will temporarily allow launching the application as there is no check. However, make sure to switch to default once you are done.

One of the important functions in the Windows operating system is the Task Scheduler. It can automatically run various tasks at a certain time where you’ll have to add a task that needs to be executed and then choose the time it has to run at. So when that time comes, the Task Scheduler will run the task automatically. However, some users reported getting an Error 0x80070057 where the Task Scheduler fails to start. This kind of error may be due to a disabled service that prevents the service from running. It is also possible that the antivirus program interfered with the task – it could be that the Task Scheduler is somewhat in the block list since the antivirus adds it to the list automatically when it’s installed. On the other hand, it could be that you lack administrator-level privilege which is why the Task Scheduler was not able to carry out the task. To fix this issue, here are some suggestions you can try.

Option 1 – Try to restart the Task Scheduler service

As mentioned, it is possible that the Task Scheduler service could be disabled. You could have disabled it when trying to enhance your computer’s performance and whatnot. Thus, you need to verify if it’s running or not and then restart it.

• First, you need to tap the Win + R keys on your keyboard to open the Run dialog box.
• Next, type “services.msc” in the field and click OK or tap Enter to open the Windows Services Manager.
• You will see a list of Services and from there, look for the Task Scheduler service and double click on it.
• After that, go to the General tab and click on the Startup Type options and then select “Automatically” from the given list.
• Click on the “RUN” option and select the “Restart the Service” option.
• And click on the “After Second Failure” option and then select the “Restart-Service” option again.
• Now click on the “After Subsequent Failures” tab and select the “Restart the Service” option.
• Finally, click on the Apply and OK buttons and then run the Task Scheduler and see if the issue is now fixed.

Option 2 – Try to temporarily disable the anti-virus program

As mentioned, the error could be due to the antivirus program or the Windows Defender Firewall installed in your computer. Thus, disabling them or any security software installed on your computer is always a good idea you can try when you’re not able to access the shared drive on your computer. There are times when you encounter problems like the Task Scheduler Error 0x80070057 due to interference of antivirus or security programs. Thus, you have to disable both your antivirus program for the meantime and check if it fixes the error or not.

Option 3 – Run the Task Scheduler with an administrator account

Like pointed out, the Task Scheduler Error 0x80070057 may be due to the lack of admin privileges. Thus, you have to log in to an administrator account and try running the Task Scheduler again. It is also recommended that the administrator account you’re going to use as a password when logging in.

Option 4 – Repair the Task Scheduler by deleting corrupted tasks

Note that a single corrupted file can cause big problems so this option is quite important. And for you to delete a corrupted task or any task from the Task Scheduler, you have to use the Registry Editor if you are not able to use the Task Scheduler interface. To do so, follow these steps:

• Tap the Win + R keys to open the dialog box for Run.
• Next, type in Regedit and click on OK or tap Enter to open the Registry Editor.
• Then navigate to this path: ComputerHKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionScheduleTaskCacheTree

Note: In this path, you can see all the tasks that are currently set in the Task Scheduler. And since it would be hard to tell which one of them is corrupted, you have to delete the latest one in Task Scheduler last. But before you do so, make sure that you take note of the ID of the tasks. And for you to get the ID, you have to select the task you wish to delete and double click on the ID string located on your right-hand side, and then copy it in the Notepad.

• Right-click on the task name and then delete it.
• After that, delete the very same GUID which you have copied earlier from these folders:
• ComputerHKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionScheduleTaskCacheBoot
• ComputerHKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionScheduleTaskCacheLogon
• ComputerHKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionScheduleTaskCacheMaintenance
• ComputerHKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionScheduleTaskCachePlain
• ComputerHKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionScheduleTaskCacheTasks

Note: You might not see the same GUID from these folders but if you see it, delete it right away.

• Next, navigate to this location: C:/Windows/System32/Tasks
• Delete the very same tasks you just deleted from the Registry Editor.
• Restart your PC and check if the Task Scheduler is back to its normal state or not.

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. Builders 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.

In today's world any professional, whatever be design, print, web design or similar is using one or more Adobe programs. Adobe has cemented itself as a must-have software for any kind of serious and even amateur work. Sadly in the latest Windows 11 adobe software in some instances can slow down your computer and put some hard load on the CPU. If you are one of these unfortunate users, keep reading because we have a few things you can do to solve this.

1. Run SFC scan

SFC scan is a built-in Windows tool aimed at diagnosing and repairing system files inside Windows itself. Running an SFC scan usually solves most issues of these kinds so we will try that one first.

1. Press ⊞ WINDOWS + S to open the Search bar and type in cmd
2. Select command prompt and on the right side click on Run as administrator
3. Inside command prompt type in: sfc /scannow and press ENTER
4. Wait for the whole process to finish and reboot your system

2. Update Windows

Windows updates are designed to fix issues and solve problems, check to see if a new update is available to install.

1. Press ⊞ WINDOWS + I to open the Settings app
2. Click on Windows Update in the bottom left pane
3. On the right check visually if there is an update pending and if there is, install it

3. Temporary turn off antivirus and firewall

Antivirus and firewall can interfere with adobe applications and background services, try turning your preferred protection software temporarily off and check if your CPU is still under high load.

4. Reinstall Adobe suite

Uninstall and install a clean version of the adobe creative suite or individual applications that you are using. Check your CPU load after reinstallation.

5. Uninstall Adobe CEF Helper

This is not a really advisable course of action but if non of the previous solutions have produced results then this might be the only option if you would like to keep using the software. Open File Explorer and paste the following line in the path box on top: C\:Program Files>Adobe Systems>Adobe CEF Helper or Adobe Creative Cloud >Adobe CEF Helper_uninstall.exe. Double click on the file and uninstall the CFT helper.

If you encounter the ERR_SSL_VERSION_INTERFERENCE error on your Google Chrome browser then this means that the browser is trying to load a website with SSL protocol but is not able to do so. This error can occur for many reasons and in this post, you will be given potential fixes that could help you in resolving the problem. But bear in mind that these potential fixes are not that straightforward forward so if you encounter an option you don’t understand much, just skip to the options you have the knowledge of. There is no direct fault in the browser for the ERR_SSL_VERSION_INTERFERENCE error as there are issues with caching the website data locally on your computer. Moreover, this kind of error can also appear when a website is coded incorrectly or if there are conflicting browser extensions installed in the browser that prevents the website to function properly. Refer to the suggestions given below to fix the ERR_SSL_VERSION_INTERFERENCE error in Chrome on Windows 10.

Option 1 – Try clearing browser data

There are times when some data in the browser is conflicting with the loading of the website and triggers errors like ERR_CACHE_MISS. And so you can try to clear your browser’s data. This might be a very basic solution but oftentimes it works in fixing this kind of error in Google Chrome. Follow the steps below to clear the data in your browser.

• Open your Google Chrome browser.
• After that, tap the Ctrl + H keys. Doing so will open a new panel that allows you to delete the browsing history and other data in your browser.
• Now select every checkbox that you see and click on the Clear browsing data button.
• Then restart your Chrome browser and check if you can now open any website or not.

Option 2 – Try disabling TSL 1.3

If clearing the browser data didn’t fix the problem, you can also try to disable TSL 1.3 in Chrome. To do so, refer to these steps:

• Open Google Chrome.
• Next, type in “chrome://flags/#tls13-variant” in the address bar and tap Enter.
• After that, you should see the experimental features page for Google Chrome where you can set TSL 1.3 to disabled.
• After disabling TSL 1.3, restart your computer and check if the problem is fixed or not.

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

Resetting Winsock, TCP/IP, and flushing DNS might help in resolving the ERR_SSL_VERSION_INTERFERENCE error just 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 – 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.

Option 5 – Reset Google Chrome

Resetting Chrome can also help you get rid of the error. Resetting Chrome will restore its default settings, disabling all the extensions, add-ons, and themes. Aside from that, the content settings will be reset as well and the cookies, cache, and site data will also be deleted. To reset Chrome, here’s what you have to do:

• 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.

Error code 0xc000021a - What is it?

Error code 0xc000021a occurs when the system is unable to start or there’s a failure in critical system processes. Normally, it would take about several seconds for the system to boot and while on the startup process, error code 0xc000021a may take place to block the system to boot up. Users will get a blue screen of death (BOSD) when this error occurs. When upgrading to Windows 10, be careful; you might encounter other error messages such as error code 8007002c. 

Solution

Error Causes

There are several reasons why error code 0xc000021a occurs. It is important to have a full understanding of what caused the blue screen of death before attempting to fix the error by yourself. See below for a few common causes:

• Computer malware has infiltrated your device.

• Important files such as Winlogon.exe and Csrss.exe are damaged. Winlogon.exe file is responsible for handling the login and logout processes while Csrss.exe is a vital part of Microsoft Client or Server ‘Runtime Server Subsystem’. Once one of these files is damaged or deleted, a stop error will occur.

• When there are mismatched system files installed or system upgrading process failed or still incomplete.

• Premature unloading of Wbemprox.dll

• Newly installed third-party software is not compatible with the operating system.

• There are corrupted, outdated, or incorrectly configured device drivers.

• There’s insufficient space in the system partition. Once the system partition is full, certain errors such as error code 0xc000021a will manifest.

• Windows registry is corrupted or damaged due to a software or system change. This means there are registry entries that are not cleared after uninstalling an application.

Further Information and Manual Repair

In fixing error code 0xc000021a, you might want to try and manually do so. Manual repair methods can give users effective and efficient solutions, addressing the root problems in relation to Windows error codes. Once the manual repair method is correctly implemented, users will be able to resolve issues immediately. However, there might be instances when a Windows professional is needed. In such cases, seek help from a certified Windows expert or you might want to consider using an automated tool whenever necessary.

Method One: Convert the Drive or Partition from NTFS to GPT

In order to fix Error code 0xc000021a in Windows 10, you might need to convert the partition or drive from NTFS to GPT. See below for the procedure: 1. Shut down your device then put in the Windows installation USB key or DVD. 2. Boot your device to the USB key or DVD in UEFI mode. 3. Inside the Windows Setup, open a Command Prompt window by pressing Shift + F10. 4. Type diskpart in the Command Prompt window to open the diskpart tool. 5. Type list disk to identify which drive to reformat. 6. Select which drive to reformat by typing select disk in the command prompt. Afterward, type clean then hit Enter. Once done, type convert gpt to be able to convert the drive from NTFS to GPT. Finally, type exit and press Enter. You can now close the Command Prompt window. 7. Once the partition or drive is converted from NTFS to GPT, the user can now continue the Windows Setup installation. NOTE: Select Custom in choosing which installation type to use. The drive will then appear as a single area of unallocated space. Choose that unallocated space then select Next. At this point, Windows will now begin the installation.

Method Two: Fix System File Errors

There are times when system files get corrupted or damaged which will result in system failure. If this is the case, you can use a Windows free tool to repair corrupted or damaged system files. 1. Right-click on the Start button then selects Command Prompt (Admin) from the list to open a Command Prompt window. 2. Once the Command Prompt appears, type sfc /scannow then hit Enter. Wait until the process completes. If the process is completed and it doesn’t report any error or issues that remain unsolved, you might want to employ the next method.

Method Three: Reset Windows 10

Resetting Windows will delete all software and user accounts installed in the operating system and will reinstall a fresh Windows. 1. Boot your device using a Windows installation USB key or DVD. Select Repair your computer to locate the Troubleshoot option. Afterward, choose Reset this PC. NOTE: If the device is able to boot the system, you can reset Windows without using a Windows installation USB key or DVD. You just have to boot the device then navigate to Settings in the Start button. Choose Update & Recovery then select Recovery found on the left pane. Choose Reset this PC option then select Go back to an earlier build and Advanced startup. Select Get Started button found in the Reset this PC tab. 2. Depending on your device’s condition, you can either select Keep my files or Remove everything. Both options will remove all applications installed in the device and will revert to default settings. 3. Choose either Just remove my files or Remove files and clean the drive depending on the situation. If you choose the Remove files and clean the drive option, the procedure will take longer as it will erase all the files permanently. In this case, deleted files cannot be recovered. However, if you don’t want to remove files permanently, select Just remove my files. 4. Once you’ve decided how to reset your system, click on Next once the Warning screen appears. Afterward, choose Reset once prompted. When the process completed, click on Continue.

Method Four: Download an Automated Tool

Can’t seem to put up with the long and technical manual repair process? You can still fix this error by downloading and installing a powerful automated tool that will surely get the job done in a jiffy!