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Fixing Error 0xc0000005 in Windows

If you encounter Error 0xc0000005 when you try to launch a program on your Windows 10 computer then this means that Windows was unable to process the files and the configuration correctly needed in order to run the program properly. You can encounter this kind of error with an installed program and even as the installer for a particular program. To fix this error, this post will provide you with some potential fixes that might help.

Error 0xc0000005 occurs due to Access Violation which happens when a user tries to open a program and this error code may be accompanied by any of the following three error messages:

  • The application was unable to start correctly
  • Access violation Exception Error
  • Windows Installation Error

To fix this error, you need to follow the given options below carefully but before you do that, you can try to use System Restore Point first to put your computer back to its previously known stable state.

  • 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.

After performing System Restore check if Error 0xc0000005 is now fixed or not. If not, then make sure to use the options given below to resolve the problem.

Option 1 – Update or rollback drivers

If the System Restore didn’t work, 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 2 – Try running the System File Checker Scan

The SFC or System File Checker scan could detect and automatically repair damaged system files that could be causing Error 0xc0000005. SFC is a built-in command utility which helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files to good system files. 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.

 Now restart your computer.

Option 3 – Run the Windows Memory Diagnostic tool

Since this error could be caused by some issues in the memory, you can try running the Windows Memory Diagnostic tool and see if it helps.

  • Tap the Win + R keys to open Run and type exe and hit Enter to open the Windows Memory Diagnostic Tool.
  • After that, it will give two options such as:
    • Restart now and check for problems (Recommended)
    • Check for problems the next time I start my computer
  • Once your computer has restarted, perform a basic scan or you could also go for the “Advanced” options such as “Test mix” or “Pass count”. Simply tap the F10 key to start the test.

Note: After you select the option, your PC will restart and check for memory-based issues. If it finds any issues, it will automatically fix them and if there’s no issue found, then it’s most likely not a memory-based issue so you should try the other options given below.

Option 4 – Try recreating the Boot records

If your system files are infected and modified by some malware, then it’s no wonder why you’re getting Error 0xc0000005 since this error can also be due to malware. To fix this, you can try to recreate the boot records on your computer. How? Follow these steps:

  • Tap the Win + R keys to open the Run dialog box.
  • Then type “cmd” in the field and hit Enter to open Command Prompt.
  • After that, type in each one of the following commands below and hit Enter right after you input each one of them.
    • Del D:WindowsSystem32xOsload.exe
    • Del D:WindowsSystem32xNtKrnl.exe
    • Del D:WindowsSystem32Driversoem-drv64.sys
    • attrib c:bootbcd -h -r –s
    • ren c:bootbcd bcd.old
    • bootrec /rebuildbcd
  • After you input the listed commands above, it will recreate all the files needed inside the boot record.

Option 5 – Try turning off Data Execution Prevention or DEP

You might want to turn off Data Execution Prevention or DEP if it could be the one that’s blocking your process to run a particular program. To disable DEP, refer to the steps below.

  • Type “cmd” in the Start Search and then right-click on Command Prompt from the results and select Run as Administrator.
  • After that, type the following command and hit Enter to disable DEP:

bcedit.exe /set {current} nx AlwaysOff

  • Restart your computer.

Option 6 – Try to fix Registry

  • Tap the Win + R keys to open the Run dialog box.
  • Next, type “Regedit” in the field and hit Enter to open the Registry Editor.
  • After that, go to this registry path: HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionWindows
  • From there, double click on LoadAppInit_DLLs located at the right side of the panel and change its value from “0” to “1”.
  • Now restart your computer.

Option 7 – Try checking RAM

You can also check RAM physically and see if it is in an operable condition. You might want to consider replacing it and see if it fixes the error.

Option 8 – Try to disable your antivirus program temporarily

Disabling the antivirus program or any security software installed in your computer might help in resolving the error since there is a good chance that it’s blocking the program from execution due to suspicious behavior. Just don’t forget to enable the antivirus program back again.

Option 9 – Troubleshot the problem in a Clean Boot State

There are some instances that some conflicting programs installed in your computer might be the one that’s causing Error 0xc0000005. To identify which program is causing the problem, you need to put your computer in a Clean Boot State. To do so, follow the steps below.

  • 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.

Option 10 – Try resetting Windows 10

To fix this error, you can try resetting Windows 10. Doing so won’t get rid of any file in your system – instead of erasing all your media files and documents, this reset option resets all the system settings and files.

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Mail and Calendar not working with Cortana
Mail and Calendar not working with Cortana? As you know, Cortana was first launched way back in 2014 with an emphasis on its tight integration with both the Windows Mail and Calendar apps. This integration has been one of the highlighting features of this Personal Digital Assistant. However, there are some users who reported that the Calendar and Mail integration with Cortana is not working on their Windows 10 computers. This kind of problem could be due to several factors like the loose integration between the services, incompatible versions of the components, and many more. According to the users who experienced the issue, the features affected are the syncing of calendar appointments, sending emails via Cortana, and so on. To fix this problem, there are several options you can try. You can try to restart Cortana’s processor run the Windows Store Apps troubleshooter. You could also try to relink your Microsoft account or reinstall the Mail and Calendar apps, as well as reinstall Cortana.  For more details, follow the suggestions given below.

Option 1 – Restart Cortana’s process in the Task Manager

Restarting Cortana’s process in the Task Manager could also help you resolve the problem. Refer to the steps given below to do so.
  • Tap the Ctrl + Alt + Del keys to open the Security options window.
  • From there, look for the Task Manager in the given list and open it.
  • Next, look for the process of Cortana and right-click on it, and then select the End Task option to end its process.
  • After that, the Cortana process will restart by itself and re-initialize.

Option 2 – Run the Windows Store App troubleshooter

The Windows 10 Store Apps Troubleshooter will help you in fixing the Web Preview problem in Cortana. This is a great built-in tool from Microsoft that helps users fix any app issues. To use the Windows Store Apps Troubleshooter, follow the steps below.
  • Tap Win + I keys again to open the Windows Settings panel.
  • Go to Update & Security and then go to Troubleshoot.
  • Under the Troubleshoot section, on your left-hand side, scroll down to find Window Store Apps.
  • Then click on the Run the troubleshooter option and follow the on-screen instructions and then see if it fixes the problem.

Option 3 – Try to relink your Microsoft Account

You might also want to relink your account in Microsoft using the Windows 10 Settings app.
  • Open the Windows 10 Settings app.
  • Next, navigate to Accounts > Email & Accounts and from there, go to the section of Accounts used by Email, Calendar, and Contacts.
  • After that, select your email account and select Manage.
  • Once done, a new panel will come up where you have to click on the “Delete account from this device” link.
  • Once you get a confirmation, select Delete and then relink the same account. This should resolve the problem.

Option 4 – Try to reinstall or update the Mail and Calendar apps

  • Open Windows PowerShell as admin.
  • Next, execute this command: Get-AppxPackage *windowscommunicationsapps* | Remove-AppxPackage
  • Once done, restart your computer and go to the Microsoft Store page to get the latest updates for both Windows Mail and Calendar apps.

Option 5 – Try to reset Cortana via Settings

  • Launch the Windows 10 Settings app and go to Apps > Apps & Features.
  • Next, look for the entry of Cortana on the right-side panel and select it.
  • After that, select the Advanced options and then select the Terminate button under the Terminate section.
  • Once done, click on the Reset button under the Reset section.
  • Restart your PC.
  • After your computer boots, launch Cortana again and check.

Option 6 – Try to reinstall Cortana

If none of the options given above works, you must consider reinstalling Cortana.
  • First, right-click on the Taskbar and select the Task Manager.
  • Next, select File menu > Run new task and type “Powershell” in the field and then select the “Create this task with administrative privileges” option.
  • Click on OK to open the PowerShell console.
  • After that, type the following command and hit Enter to execute it:
Get-AppXPackage -Name Microsoft.Windows.Cortana | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)AppXManifest.xml"}
  • Restart your computer and check if the problem is now fixed.
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Fix rtf64x64.sys Blue Screen error on Windows
rtf64x64.sys Blue Screen error happens in random intervals but it is a regular occurrence, it can happen when playing games, when watching movies, or even when the computer is idle. in this article we will guide you on how to resolve this error from the most simple steps you could take and do not worry, altho the error seems dreadfully and scary, it is nothing to worry about. If you can boot Windows normally after error great, proceed with instructions, else reboot into safe mode or use installation media to boot.
  1. Use official Microsoft online troubleshooter Microsoft has an online blue screen troubleshooter that was made specifically for this kind of situation. Go to Troubleshoot screen error and answer questions needed. Most of the time this will be enough to solve any blue screen issue.
  2. Update network and sound drivers How is this error traced back to Realtek devices, go to the Realtek website and download drivers. Install them and reboot the system.
  3. Use a dedicated software solution DRIVERFIX is an application made for these and other kinds of driver issues and problems, it is one click automated solution for driver fixing. Visit the Driverfix site and download the application
  4. Perform system Restore If you have not managed to fix the issue with previous steps roll back to a previous restore point when everything was working.
  5. Replace network or sound card If everything failed including system restore then it is likely that it is a hardware malfunction. Replace faulty components and you should not receive errors anymore.
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Assigning Multiple IP Addresses to Adapter
There are times when an IT admin has to set up multiple IP addresses to the same network adapter. Setting up multiple IP addresses in scenarios like hosting various SSL sites, speed up traffic exchanges can help in avoiding being blacklisted in the SPAM filters, and so on. So in this post, you will be guided on how exactly you can assign multiple IP addresses to the network adapter in your Windows 10 computer. There are several ways to assign multiple IP addresses in a network adapter. You can do it using the Network Adapter settings or using the Netsh utility, as well as the Windows PowerShell utility. To get started, refer to each one of the options provided below.

Option 1 – Assign multiple IP addresses via Network Adapter settings

  • Go to Settings first and from there, select Network & Internet, and then click on the Change adapter options. This will show you a list of both the physical and virtual network adapters in your computer.
  • Next, double click on the Ethernet adapter where you want to assign the multiple IP addresses and then click on the Properties button.
  • After that, you should see the Ethernet properties where you have to select the “TCP/IPv4” or “TCP/IPv6”.
  • Once done, click on the Properties button and then select the “Use the following IP address” option under the General tab.
  • Now you have to add an IP address, subnet, and default gateway to the network adapter and then click on the Advanced button.
  • This will open the Advanced TCP/IP settings where you have to click on the Add button so you can add an IP address. From here, you can keep adding multiple IP addresses to the network adapter. You also have the option to add multiple gateways or DNS IP addresses.
  • Once done, if you execute the “ipconfig” command, you should see all the secondary IP addresses listed.

Option 2 – Assign multiple IP addresses using the Netsh command

Another way to assign multiple IP addresses to your network adapter is via the Netsh command.
  • In the Start Search, type “command prompt” and from the search results that appear, right-click on Command Prompt and then select the “Run as administrator” to open it with admin privileges.
  • If a User Account Control or UAC prompt pops up, just click on Yes.
  • After that, run this command: Netsh int ipv4 add address name="Local Area Connection" 192.168.100.100 255.255.255.0 SkipAsSource=True
Note: You have the option to set “SkepAsSource” since it depends on your needs using the Netsh command. When it is configured as true, the IP address won’t be used by the OS for outbound connections.

Option 3 – Assign multiple IP addresses via Windows PowerShell

  • Tap the Win + X key combination and click on the “Windows PowerShell (Admin)” option.
  • After opening Windows PowerShell as admin, use the NetIPAddress command so you can add more IP addresses. Execute this command: Get-NetIPAddress | ft IPAddress, InterfaceAlias, SkipAsSource
  • Next, assign an IP address to a network adapter by executing this command: New-NetIPAddress –IPAddress 192.168.100.100 –PrefixLength 24 –InterfaceAlias “vEthernet” –SkipAsSource $True
  • Now to modify the “SkipAsSource” parameter, use this command: Get-NetIPAddress 192.168.100.100 | Set-NetIPAddress -SkipAsSource $False
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Guide to Fixing the Error 0x800CCC90 Quickly

What is the error code 0x800ccc90?

The 0x800ccc90 is a common Outlook Express error. This error occurs when Outlook Express fails to connect to the mail server that handles incoming and outgoing emails.

The error is usually displayed as:

“There was a problem logging onto your mail server. Your User Name was rejected.”

Though this error does not pose any security threats to your PC if it is not fixed immediately, it may limit your ability to send and receive emails on your Outlook email address.

Error Causes

The error 0x800ccc90 is usually triggered by the following causes:

  1. Authentication problem- This happens when your account details are not authenticated by the server. In this case, you will see a pop up message displaying ‘Server:’pop3.example.com’, or ‘Secure (SSL): No, Server Error: 0x800ccc90’.
  2. Failure of POP3 server

Further Information and Manual Repair

If you come across the error 0x800ccc90, then don’t you worry! You don’t have to hire a professional to resolve this issue. In fact, you can fix it all by yourself. Here are some DIY solutions to repair this problem.

Solution 1:

  • Go to the ‘Tools’ tab and select ‘Accounts’
  • As you click on the accounts tab, an internet accounts box will appear on the screen
  • Now double click on the account property box.
  • After that go to the server tab and click it.
  • Now check on the box that says ‘My Server Requires Authentication.’
  • Once you check on this option now click on apply to accept changes and then close the window.
  • To bring the changes into effect, restart Outlook and then try to send emails again. Hopefully, this will work.

Solution 2:

However, if you are still unable to resolve the problem, then this means the PST files are corrupt and damaged and there is no problem from the server's end. When this happens, then the best way to resolve this problem is to download a PST repair tool.

We suggest downloading the PST repair tool from a trusted website.

After downloading it, run and scan it on your PC to detect errors. You will have to be patient because scanning may take a couple of minutes. Once the scanning is complete, click on repair to resolve the problem.

So, next time when you are unable to send or receive emails on your Outlook Express and you see the 0x800ccc90 error message, then try using the solutions given above to resolve the error right away.

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How to Fix Windows 10 Error 80240020

Error Code 80240020 – What is it?

Users who receive Error Code 80240020 when attempting to install and/or upgrade to Microsoft Windows 10, are receiving the error because the Windows 10 installation folder is either corrupted or unfinished. As a result of this error code, your download and the subsequent update will not process correctly. Users who receive this code do not have to do anything specific, as it might mean that they are attempting to update before their system is ready. These users can simply wait for their computer to prompt them for the update, and then follow the on-screen instructions for the update. However, if a user is seriously wanting to update to Microsoft Windows 10 prior to the prompt, there are ways around error code 80240020. Common symptoms include:
  • A dialog box appears with the Error Code 80240020
  • Microsoft Windows 10 upgrade is unsuccessful or freezes in the process of updating and displays the error code message.

Solution

Restoro box imageError Causes

This error is only caused by one type of issue, and that is unfinished or corrupted files being present in the Windows 10 installation folder.
  • Files that are unfinished in the Windows 10 installation folder are a result of the download not processing correctly, therefore the update is not successful because your computer does not have the files that it needs.
  • Files that are corrupted in the Windows 10 installation folder are a result of either a faulty download or preexisting corrupted files that need to be purged.
Until your system is ready to download the new Microsoft Windows 10 upgrade, you will be unable to install the upgrade. As stated, you have the option of waiting for your system to prompt you to download (which means that your system has made the necessary changes to its own files and is ready for the upgrade), or you can use the following steps to correct the issue yourself.

Further Information and Manual Repair

Users and Microsoft Tech Support personnel have discovered three methods to correct error code 80240020. Each of these methods should be attempted by someone who is comfortable with computer software and programs. Anyone who is not comfortable with software should either contact Microsoft Support or wait for their computer to prompt them for the Microsoft Windows 10 upgrade.

Method 1:

  1. Back up the Registry of your operating system.
  2. Find the Registry Key: [HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionWindowsUpdateOSUpgrade]
  3. Note: this Registry Key should already exist, if it does not exist, create it.
  4. Create a brand new DWORD Value that is named AllowOsUpdate
  5. Set the Value to 0x00000001.
  6. Close and reopen your Control Panel.
  7. Restart the Microsoft Windows 10 upgrade.

Method 2:

  1. Download the Microsoft Windows 10 ISO (installation device) from the following website: http://www.microsoft.com/en-us/software-download/windows10
  2. Users must select the appropriate ISO, either 32 bit or 64 bit, depending upon their individual computer.
  3. Extract the ISO file to a separate USB device or burn the program to a compact disc.
  4. Run the Microsoft Windows 10 upgrade directly from the software that you have thus created.

Method 3:

  1. Access the files on your computer via MY COMPUTER
  2. Under the C: drive, access the WINDOWS folder
  3. Select the SOFTWARE DISTRIBUTION folder, followed by the DOWNLOAD folder.
  4. Delete any files within this download folder.
  5. If you are unable to delete these files, open the command prompt (CMD) as the administrator, and type “net stop wuauserv” into the CMD prompt window. Press ENTER. This should allow you to delete the files from step 4.
  6. Once the files are deleted, open and run the CMD as the administrator and type “wuauclt.exe /updatenow”. Press ENTER.
  7. Access the WINDOWS UPDATE folder from your control panel, the update and download should resume without further interference from the user.
As with any other error codes, if the above methods do not rectify the issue, it may be necessary to download and install a powerful automated tool to rectify error code 80240020.
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A Guide to Quick Fixing the Error Mscomctl.ocx

What is Mscomctl.ocx?

Mscomctl.ocx is a Microsoft library Windows Common Controls file. The Mscomctl.ocx error occurs when this file is either lost or gets corrupt. The error is displayed on the screen when the user tries to run a program that is dependent on this file. It appears as:

“Component 'MSCOMCTL.OCX' or one of its dependencies not correctly registered: a file is missing or invalid”

Solution

Download Available to Completely Repair the Error Mscomctl.ocx

Restoro box imageError Causes

Installing and then uninstalling a large number of applications on the Windows operating system often corrupts or unregisters the Mscomctl.ocx library. This message will continue to appear on the screen until you re-register the library file again on your system.

Further Information and Manual Repair

You don’t need to have the sound technical knowledge or call a professional to resolve Mscomctl.ocx error on your PC. The Mscomctl.ocx error is easy to repair and can be fixed in a couple of minutes. Here are 2 solutions to repair the Mscomctl ocx error code on your system:

Cause: Error occurs because the Mscomctl ocx file is unregistered

Solution:

  1. Go to the start menu and type ‘Mscomctl.oxc and press enter
  2. Copy the ‘Mscomctl.ocx’ file and paste it in "C:WindowsSystem32" folder
  3. Now click the start menu again and type ‘CMD’ in the search box. This will open your computer's command prompt.
  4. Once this opens, type either of the following commands and then press enter. If you have a 64-bit operating system, then type: Regsvr32 "C:WindowsSysWOW64MSCOMCTL.OCX” and if you have 32-bit operating system, then you should type ‘Regsvr32 "C:WindowsSystem32MSCOMCTL.OCX"
By doing this, you will be able to register the Mscomctl.ocx file on your PC and then you will no longer receive Mscomctl.ocx error code.

Cause: Error code occurs because the Mscomctl.ocx file is missing

Solution:

  1. First search for MScomctl ocx on your local drive to see if it is missing.
  2. If the file is missing, then download the MScomctl.exe file from a reliable website.
  3. Now extract the file to your C:WINDOWSsystem32 directory
  4. Then click start and run.
  5. Now type ‘REGSVR32 MSCOMCTL.OCX’ and press enter
Please note to implement any of the two solutions stated above, you will need administrator rights. If you have the administrator rights then only can you make the above registry changes. Therefore to make the following changes you will have to access the PC using the Administrator account. Simply follow the instructions given above to repair this error code problem right away!
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Sharing is caring, an old saying says. I completely agree and that is reason enough for this article filled with sharing goodness. Holidays are coming and I hope that the holiday spirit is strong with you, that you will spend them in peace and with loved ones. All that being said wouldn’t it be great if you can spend some joy with close ones and share some of your games on their account so they can enjoy them as well? steam libraryWell, you can and it is not complicated as well. Follow this easy guide to see how can you get someone’s account up and running with some of your games.

The steam Family sharing feature

The family Sharing feature inside Steam will let you share your games to another account so owners of that account can play games that you have purchased without the need to buy themselves. You can allow up to 5 accounts and 10 devices to play your library games, and owners of these accounts will have their own achievements. Be aware that enabling this option will place your entire library on the share, you will not be able to choose which games you would like to share and therefore any kind of parental controls are not applying here. Also know that once the game is running on one device, others will have to wait for one playing to finish before they can get a spin on it. Only the owner of the game can play whenever he wants as a priority but others will have to wait for the game to be not run by someone else.

How to Share Your Game Library

In order to share your game library have a person, you wish to share games with at his device on ready to go and enable steam guard on your account. To enable steam guard login into your account and on the top left corner click on Steam and then on Settings. Inside settings click on the Manage Steam Guard Account Security button. Choose the way of authentication either by mail or steam guard mobile app. Check Get Steam guard codes by email radio button and re-login into account.

Sharing Games on another Steam account

Now that Steam Guard is enabled on the primary account let’s share some games!!! Inside client again, in the top left click on Steam and again on settings. In the left panel choose and click on Family. Inside Family section check box beside Authorize Library Sharing on This Computer. Log out of your account and login into the client user account credentials you wish to share your library with (this is your friend or cousin account, they need to log in to Steam client on your computer but with their credentials). After they have successfully logged in, log them out and re-log with your account again. Now go again into Steam > Family and now you should see an account in the box at the bottom with the user name or your friend or relative. Confirm that this is an account that you wish to share the library with by clicking on the checkbox next to the name. Now let users login into the desired device with their credentials and they will have access to your entire library. Happy gaming!
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How to Fix Fatal Error c000021a

Fatal Error c000021a - What is it?

Fatal Error c000021a is a type of Windows stop error also known as the blue screen of death (BSoD) error. When this error occurs, it causes the computer screen to go blue and locks the user out of the current activity. This error code is fatal and can lead to serious issues like system crashes and freeze. The error code is usually displayed in the following format:
STOP: c000021a {Fatal System Error} The Windows Logon Process system process terminated unexpectedly with a status of 0xc0000034 (0x00000000 0x0000000)

Solution

Restoro box imageError Causes

Fatal Error c000021a occurs when the Windows kernel detects that either Winlogon.exe or Csrss.exe service processes have stopped responding or failed to load.  When this happens the error code pops up on the screen. Nonetheless, this is not the only reason for the occurrence of this error. There are plenty more reasons why Fatal Error c000021a may pop on your computer screen. These include:
  • Missing or corrupt hardware drivers
  • Faulty hardware
  • Windows System Restore failed during the rollback process
  • Malware or viral infection
  • Registry issues
No matter what the reason may be, it is advisable to fix the error right away without any delays. Remember it is a fatal error and can cause a great deal of damage to your PC.

Further Information and Manual Repair

Fatal Error c000021a is a serious PC issue but this does not mean you have to hire an expert to get it fixed. The good news is that this error is actually quite easy to resolve. You don’t have to be a technical whiz or a computer programmer to fix Fatal Error c000021a on your PC. Here are some do it yourself methods to fix this error code right away without any hassle: Let’s get started:

Method 1: Update Your PC Drivers

As we mentioned about corrupt or missing drivers can be one of the many reasons for the occurrence of this error. So, check the drivers first. Perform a driver scan and make sure all your drivers are updated.

Method 2: Perform a Windows System Restore

To do this, first launch Task Manager by pressing CTRL+SHIFT+ESC on your keyboard. Now click on the application tab and then click ‘New Task’ then browse. After that, go to C:\Windows\System32\Restore  folder and then double click the rstrui.exe file. This will help start system restoration. Your computer will reboot during the process and hopefully, the error will be resolved. Nonetheless, if the error still persists then try methods 3 and 4.

Method 3: Scan for Viruses

Sometimes Fatal Error c000021a may also occur due to malware infection. Your PC may be affected by viruses hidden in different locations without you knowing about it. Therefore to resolve this error, it is recommended to run an antivirus and scan for viruses. If detected, remove them right away to fix the error code.

Method 4: Repair the Registry

Another method to resolve Fatal Error c000021a code on your system is to repair the registry. The registry stores all the information and activities performed on the system. If it is not cleaned frequently, it gets loaded with too many files unnecessary and obsolete files like the junk files, cookies, internet history and temporary files which corrupts and damages the registry thereby generating blue screen of death error codes like Fatal Error c000021a. Though you can repair the registry manually it can be both time-consuming and slightly difficult especially if you are not a computer programmer. Therefore it is advisable to download a registry cleaner to fix it right away.

Automatic Repair with Restoro.

Whether the Fatal Error c000021a code occurs due to viral infection or registry issues, download Restoro. This is a next-generation, advanced, and multi-functional PC Fixer. This software is deployed with multiple utilities such as a powerful registry cleaner, an antivirus, a system optimizer, and more. The registry cleaner scans the entire PC and detects all types of registry issues at once. It cleans the registry, wipes out all the unnecessary files, and restores the registry back to normal. Simultaneously, the antivirus embedded in this software detects all types of viruses including malware, adware, spyware and Trojans and removes them in seconds. The system optimizer feature ensures the speed and performance of your PC are not compromised during the repairing process. It ensures your PC works at its optimal speed. Restoro is a one-stop solution for all your PC needs. It has a user-friendly interface making it easy for all levels of users to work around. It is compatible with all Windows versions Click here to download Restoro and resolve the Fatal Error c000021a code on your PC today!
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What to do if Windows 10 PC turns on by itself
A PC that turns on by itself every so often can get quite annoying. Many users have faced this problem countless times. There are lots of possible reasons why your Windows 10 PC turns on by itself, wakes up from sleep, standby, or even when it’s shut down. To find out what exactly woke your computer, simply open Command Prompt as admin and type the following command:
powercfg –lastwake
Once you enter the command given above, it will show you the last device that woke your PC up. After that, you need to type in the next command:
powercfg –devicequery wake_armed
After entering the command, it will show you a list of all the devices that could wake your PC up. The goal in running these commands is to understand the reason what’s really causing your PC to turn on and see the reason is on the hardware level or not. Here are a couple of options you can try if your Windows 10 PC turns on by itself.

Option 1 – Try disabling Fast Startup

As you know, Windows 10 comes with a mode called Fast Startup which does not turn off the computer in the usual manner. This mode keeps your computer in a mixed state so that when you turn it on again, it will be a lot faster. However, as useful as this feature appear to be, some security experts find this an issue, for numerous reasons – for one, it can turn on your Windows 10 PC by itself. Thus, you need to disable this feature to fix the problem.

Option 2 – You need to stop the Task Scheduler from waking up your computer

There are times when the issue has something more to do with the software than hardware. It could be that you are using a Scheduled Task to get some work done on your computer at a particular time of the day or many times a day. That’s why if you really are using Task Scheduler, you need to change the Power settings of Windows to make sure that it ignores those tasks rather than deleting them instead when your computer is either on Hybrid or Standby mode.
  • Open the Power Options and then click on “Change Plan Settings”.
  • After that, make sure to choose the correct power plan and then select the “Change advanced power settings” option.
  • Next, look for the Sleep tree and expand it to view the “Allow Wake Timers” option and then disable it. Disabling this option will make sure that none of the program that could wake your PC up when it’s either on shutdown or sleep mode. However, this only applies to laptops.

Option 3 – Try to disable Automatic Restart

There are instances when the computer crashes and the system restarts itself. This is actually by design – when your computer has been left on standby, the computer will restart and if the program repeats, it will keep on waking your PC up.
  • In the Search bar, type in “system”.
  • Once it appears from the search results, click on it.
  • Next, select Advanced system settings on the left side and then go to the Advanced tab.
  • From there, click on Settings under Startup and Recovery.
  • Then unmark “Automatically Restart” and click on OK.

Option 4 – Adjust the Power Management option of both the Keyboard and Mouse

As you know, two of the culprits in waking your PC up are the keyboard and the mouse. If they’re slightly moved or hit, your PC turns on. To prevent these two from waking your computer up, you need to make some adjustments to their power management option since they have one. You can disable this option to ensure that they won’t wake your PC up unless you really want it to.
  • Tap the Win + X keys and then tap M to open the Device Manager and list all the hardware on your computer. From there, select your keyboard or mouse.
  • Next, right-click and then go to Properties and go to the Power Management tab.
  • In this tab, uncheck the “Allow this device to wake the computer” box.
Note: Aside from the keyboard and mouse, if you are also using any gaming rig to play games on your computer, then you might have to disable their power options as well as they could also wake your computer. Just make sure that either the keyboard or the mouse has the ability to wake your computer up at the very least as it can be quite inconvenient to tap the Power button every time you want to turn on your computer.

Option 5 – Modify Wake On Lan

The Wake On Lan feature can bring back your computer online if it is connected to a network. This feature is useful especially when a computer wants to communicate or to send data or files to a network computer which should come online only when it’s requested. Wake On Lan is built into the hardware, i.e. network adapter so it is one of the possible reasons why your PC turns on by itself.
  • Tap the Win + x keys then hit M to open the Device Manager and then under the Network adapters, look for the one that was listed above. Take note that you must not change anything with the ones that are listed as Miniport.
  • Next, right-click and select Properties and then go to Power management and from there, uncheck the “Allow this device to wake up the computer” option. This will ensure that no PC on the network can ever wake your computer up.

Option 6 – Prevent any scheduled Windows Update and Automatic maintenance

It is also possible that the Windows Update has restarted your PC to complete the update. This depends on your active hours or a predefined schedule. AS you know Windows has a built-in Automatic Maintenance mode which wakes the computer up at the scheduled time and performs the system update. This could be one of the possible reasons why your computer turns on by itself. so to prevent any scheduled updates and maintenance, you can simply change the time for Automatic maintenance. How? Follow these steps:
  • Open Settings then go to Windows Update and Security >Windows Update and select Active Hours.
  • After that, type in “Automatic maintenance” in the search bar to change the time for Automatic maintenance.
  • From there, you can adjust the timing or just uncheck the “Allow scheduled maintenance to wake up my computer at the scheduled time” box.
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How to turn off check boxes in File Explorer
By default inside Windows 11 in File Explorer, once the file is selected, the small check box will appear beside it on left indicating visually that the file is selected. Older users will remember this feature from old Windows Vista and the feature itself is great if you are on some sort of touch device and need to select multiple files. windows 11 File ExplorerHowever, if you are working on a computer with a keyboard and mouse this feature might annoy you and seem like something that is not needed. Like many things inside Windows 11 this feature also can be customized and turned OFF if you do not want it. In this guide, we will see how to turn these boxes off. Microsoft has somewhat hidden this feature but luckily it is not difficult to find it if you know where to look.

Turning check boxes OFF

  1. Open File Explorer (if you do not have an icon on your Taskbar, right-click on the Start button and select File Explorer from the menu)
  2. Click on View on the top toolbar
  3. Select Show
  4. Uncheck Item Check Boxes
That is everything that needs to be done, after the checkbox is unchecked all check boxes from File Explorer will disappear. If you wish to turn boxes back ON, just follow the steps and check the box beside Item Check Boxes.
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