UNMOUNTABLE_BOOT_VOLUME

As you already know, the Windows Sandbox is one of the new features in Windows 10. However, just like other new features, it also throws up errors and one of them is the error that states,

“Windows Sandbox failed to start, Error 0x80070057, The parameter is incorrect”.

This particular error in Windows Sandbox occurs due to its dependence on numerous components of Windows 10 that are related to Hyper-V and Virtualization mainly. To fix this error, there are several options you can check out. You can try to install any pending updates on your Windows 10 computer, as well as make sure that all the services related to Windows Sandbox are enabled.

Option 1 – Try to run the Windows Updates to install pending updates

The first thing you can do to resolve the “Windows Sandbox failed to start, Error 0x80070057” is to check Windows Updates in your computer and see if there are any pending Windows Updates you have to install. All you have to do is go to the Windows 10 Settings app and then go to the Windows Updates section and click on the “Check for updates” button to check if there are any pending updates that are needed to be installed. This could fix the Windows Sandbox error.

Option 2 – Ensure that all the supporting processes and services are running properly

If running Windows Sandbox as an administrator didn’t fix the error, you have to ensure that all related processes for Windows Sandbox are running properly. To do that, follow these steps:

• Tap the Win + R keys to launch the Run utility and type “services.msc” in the field and hit Enter to open the Windows Services Manager.
• Next, from the list of services, look for the following services in the given order:
  • Network Virtualization Service
  • Virtual Disk
  • Hyper – V Virtual Machine
  • Hyper – V Host Computer Service
  • Container Manager Services
• After you find the aforementioned services, make sure to check if they are enabled or not and then restart each one of them.
• Once done, try to open the Windows Sandbox again and see if the error is fixed or not.

TPM, also known as Trusted Platform Module, is a specialized chip used for security as well as encryption of users’ private data like Fingerprint, Facial data, and many more. TPM also comes with a Management Console and if you are not able to load the Management Console and you got the “Cannot load Management Console” error instead, read on as this post will guide you in fixing the problem. This type of issue usually happens when you clear or disable the TPM using the settings in the BIOS and so when you run the Trusted Platform Module Management console, you encounter the error. To fix the “Cannot load Management Console” error in your Windows 10 computer, here are some options you should check out.

Option 1 – If TPM is cleared in the BIOS:

If the Trusted Platform Module is cleared in the settings of the BIOS, you have to close and restart the TPM Management console or TPM.msc once again. It could be that the TPM Management has to reload the changes again after you’ve made them which is why you encounter the “Cannot load management console” error.

Option 2 – If TPM is disabled in the BIOS:

If you opted to disable TPM using the BIOS settings or you have turned it off by accident, then you have to enable it back and you have two options to do that – you can either enable TPM from the BIOS or using the Windows PowerShell. For more details, refer to the instructions below.

Enabling TPM from the BIOS:

• You need to first reboot your PC and then go to the BIOS.
• From there, look for TPM under the security options and in case the TPM management option has been disabled or greyed out, refer to the sub-steps given below to make it active again
  • Enable the Admin password in the BIOS.
  • Then go back to the TPM settings and check if the TPM management is already available.
• After that, you should now be able to enable TPM. Remember that it’s always a good idea to have an ADMIN password for your BIOS as it makes sure that no one can change the settings in your computer BIOS and Security level options.

Enable TPM via Windows PowerShell:

• This second option is a lot easier compared to the first one if you have admin privileges. So once you’ve opened the Windows PowerShell with admin privileges, you need to run the following command:
  • $tpm = gwmi -n rootcimv2securitymicrosofttpm win32_tpm
  • $tpm.SetPhysicalPresenceRequest(6)
• After you execute the commands given above, you need to restart your computer.
• Now, once your computer has restarted, you need to accept any BIOS prompts and then check if the “Cannot load management console” error is now fixed.

No one knows everything about a program off hand. You need to use the program for a long time before you can even possibly know all that it is able to do and all you are able to achieve with it. However, this doesn’t mean that you don’t need help from time to time. This is also the case when Outlook errors pop up. Sometimes there are things you must or probably should do with your program that you do not understand and definitely don’t know how to do. Set up POP3 with your email account in Outlook is one of these things you will probably need help to achieve.

Steps to Set up POP3

First, you may need to know what POP3 is. POP3 is the way emails are sent from one email address to another. It may be more or less instant nowadays, but the process is still long and hard-winded. Similar to how your letters get from your mailbox to the recipients' mailbox, your emails get from you to the next person. Letters are picked up in your mailbox and sent to your post office where they send it to the recipient’s post office who sends it to the recipient’s mailbox. Similarly, your email is sent to your outbox, which sends it to your email service provider, that sends it to the recipient’s email service provider who sends it to their inbox. This is one of the reasons that sending an email to someone who uses the same email service provider as you is about a millisecond faster. This process of sending emails is called POP3 and you need to set it up if you use Outlook on Microsoft. This, on Outlook, also determines which email account you send your emails from. You see, on Outlook and many other email service providers, you can have many different email addresses, no even necessarily with the email service provider’s prefix on the end. Now, if you want to see this for yourself, go on to your settings on Outlook and look for manage email accounts. If you have more than one email account, you will see them listed. Somewhere on the sidebar, you will see POP3 as well. If you want to add more email accounts to this, such as a business email or a personal email, then just click ‘Add new account’ instead of 'Manage email accounts'. When you click on an email account you have linked already, you will see on this side the details for your POP3 (incoming emails) and your SMTP (outgoing emails). This can be changed, but since everyone’s number of accounts and type of accounts is different, there is no set way to change this. However, you can give Microsoft a call and they will walk you through the necessary steps in order to change this.

Conclusion

So, POP3 can be incredibly easy to understand or incredibly hard; it depends on how good you are with electronics and the advice you are given. But don’t try to change things by yourself; get a professional from Microsoft to help you with POP3 on your Microsoft Outlook account.

If you find it hard to update Google Chrome to its latest version and each time you try to do so it keeps on failing, worry not for this post will guide you in fixing a list of Google Chrome Update errors. Even though there are a lot of error codes around Chrome, these are only caused by issues with the update. Here are some of the errors you can encounter when updating Google Chrome:

• Update failed: You can encounter this error when the Updates are disabled by the administrator.
• Update failed with
  • Error 3 or 11: When Chrome’s inbuilt updater fails to find the Update server to download the latest version.
  • Error 4 or 10: This happens while checking for updates with the message “Update check failed to start”
  • Error 7 or 12: This occurs when the download fails while checking for updates.
• Windows OS version is not supported.
• Google Chrome may not be able to keep itself updated.
• Any other errors that mention that “Update failed”

Since these aforementioned error codes are related to “Update Failure”, then they have common solutions and here they are:

Option 1 – Restart your computer

You need to restart your computer first and then try updating Chrome again. There are times when it’s only a temporary issue that can be fixed by simply restarting your computer.

Option 2 – Try checking antivirus programs, firewall, and parental control settings

If you have antivirus programs, a firewall installed in your computer, as well as parental controls, then any of these could be blocking you to download anything, including the update for Chrome. This is why you have to double-check and make sure that software updates aren’t being blocked by these programs. On the other hand, you can also try running the Network Troubleshooter as it can help you resolve any DNS or connectivity issues. To use it, follow the steps below.

• Open the Search bar on your computer and type in “troubleshoot” to open the Troubleshoot settings.
• Next, scroll down and select the “Network Adapter” option from the right pane.
• Then click on the Run Troubleshooter” button.
• After that, your computer will check for any possible errors and will pinpoint the root cause of the problem if possible.

Option 3 – Try to remove Proxy

Removing the Proxy might also help you in fixing the Chrome Update errors. 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 4 – Try to reset Winsock, TCP/IP & Flush DNS cache

Resetting Winsock, TCP/IP, and flushing DNS might help in resolving the Chrome Update errors 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 5 – Try to run the Chrome Cleanup tool

You might want to run Google Chrome’s built-in Malware Scanner & Cleanup tool as it could also help in getting rid of any unwanted ads, pop-ups, and even malware, as well as unusual startup pages, toolbars, and anything else that might overtake the network and could affect the performance of the browser.

Option 6 – 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 7 – 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.

Windows 10 is undeniably one of the great operating systems and the same thing can be said about a lot of computers that are running it. However, there are instances when things don’t go as you expect them to be. One of the many issues you might face when using Windows 10 is the inability to upload any pictures over the web. If you are facing this issue right now, you are not alone for a lot of users have suffered from the same problem at least once. Even though it might seem like a minor problem, some users find it inconvenient especially the ones who often upload pictures online. Worry not though for this post will guide you on what you can do if you aren’t able to upload any images to websites on your Windows 10 computer. To get started in troubleshooting the problem, here are some suggestions that might help:

Option 1 – Try to clear browser cache and try downloading again

There are times when some data in the browser is conflicting with the loading of the website and triggers some problems like not being able to upload pictures to websites. 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 odd problem in your browser.

Option 2 – Open your browser in Incognito Mode

The next thing you can do to fix the problem is to try opening the web page in Incognito Mode. When your browser is in this mode, it will work without extensions. This would help in fixing the problem especially if it was caused by some extension or toolbar in your browser. All you have to do is open any web page in Chrome and tap the Ctrl + Shift + N key combination to open a window in Incognito Mode.

Option 3 – Try to disable and get rid of the problematic extension

The next thing you can do after trying the Incognito mode in your browser is to see if a browser extension is the one that’s causing the problem. And if you have installed a lot of browser extensions, then identifying which one is the culprit may take a while but not too long. Once you’ve identified the culprit, you can get rid of that browser extension and see if you can now upload pictures on websites.

Option 4 – Try to reset your browser

You might also want to reset your browser as it could also help in resolving the issue. To reset your browser, here’s what you have to do:

Google Chrome

• 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.

Mozilla Firefox

• Open Mozilla Firefox and tap Ctrl + Shift + A to access the Add-ons Manager.
• In the Extensions, menu Remove the unwanted extension.
• Restart the browser and tap keys Alt + T.
• Select Options and then move to the General menu.
• Overwrite the URL in the Home Page section and then restart the browser.

Internet Explorer

• Launch Internet Explorer.
• Next, click the wrench icon for Settings.
• Then click Internet Options.
• After that, go to the Advanced tab.
• From there, click the Reset button. This will reset Internet Explorer’s settings to their default condition.
• Now click OK to save the changes made.
• Restart your computer.

Option 5 – Update your browser or switch to another one

The last option you can try is to update your browser. You can do it by checking for any available updates from its official site and then install it. However, if updating the browser did not help, you might want to consider switching to another browser.

Windows 10 is has a lot of features that help a user in optimizing a computer. So when the operating system encounters a problem, it is able to provide users with proper resources to get the problem fixed. There are even times when a user is not notified and an issue is either being repaired or dodged in the background. This kind of feature is known as the Diagnosis of the Automatic Repair feature that starts when your computer is booting. In such times, you will either see the “Diagnosing your PC” or “Preparing Automatic Repair” message on your screen. Although this feature is useful and has proven to be effective, some users reported that the process gets stuck. If you experience the same problem, read on as this post will guide you on what to do to fix it but before you start troubleshooting the problem, you might want to perform a Hard Boot first. All you have to do is to power down your computer, remove the battery and the AC adapter and then reconnect them. After that, tap and hold the power button for about 20 seconds and see if your computer boots up properly. If it doesn’t, follow the given fixes below.

Option 1 – Try disabling the automatic Startup Repair

The Automatic Startup Repair window will automatically open during boot when you have some system driver-related problem. So if you think that this is where the problem lies, you can try to disable the automatic Startup Repair.

• Click on Troubleshoot and go to the Advanced options.
• After that, select Command Prompt and execute the following command:

bcdedit /set recoveryenabled NO

• Restart your computer after that and then check.

Option 2 – Run the System File Checker

System File Checker or SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files to good system files that might be the cause why you’re facing this problem. To run the SFC command, follow the steps given below.

• Type “cmd” in the Start search and then right-click on the appropriate search result.
• Next, select “Run as administrator” to open Command Prompt with admin privileges.
• 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 and see if the problem is fixed or not.

Option 3 – Run CHKDSK to check your disk for errors

When it comes to some issues concerning the hard drive or removable devices, there is a utility in Windows that might help which is called “chkdsk”. This error check utility can help with several issues in the system.

• Tap the Win + S keys to open the Search box.
• Then type “command prompt” in the field and from the search results that appear, right-click on Command Prompt and select “Run as administrator”.
• After opening an elevated command prompt, copy and paste the following command and hit Enter:

chkdsk /r /f

• Now if you are prompted to run CHKDSK after your reboot your computer, just tap Y and reboot your PC.
• If CHKDSK is not able to find any errors, tap the Win + E keys and navigate the access window. From there, right-click on the concerned drive and click on Properties.
• After opening Properties, click on the tab Tools and then click on the “Check” button under the Error-checking section.
• Wait until the process is completed and then restart your computer.
• Once your computer has restarted, try accessing the file and check if the error persists.

Option 4 – Run the DISM tool

The next thing you can do is run the DISM tool. This tool is known to repair potentially corrupted files in your system as having them could also system issues like your computer getting stuck in the “Diagnosing your PC” or “Preparing Automatic Repair” screen.

• Tap the Win + X keys and click on the “Command Prompt (Admin)” option.
• After that, input each one of the commands listed below sequentially to execute them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • Dism /Online /Cleanup-Image /RestoreHealth

• Once you’ve executed the commands given above, restart your computer and check if the problem is now fixed.

Option 5 – Try to use installation media to boot and repair your computer

Another thing you can try to resolve the issue is to use the Windows installation bootable media so you can boot and repair the operating system. To use it, follow these steps:

• You need to first create an installation media which has the dame version of the operating system installed in your computer.
• After that, once you reach the Install Windows screen, click on the “Repair your computer” link.
• Wait until the repair is completed and then shut down your computer
• Now once your computer has restarted, check if it can now boot properly.

One of the most useful utilities on a Windows 10 computer is the Windows File Explorer. It is undeniably one of the File Managers out there full of features on all the platforms. However, it is not without its issues and one of the most common ones most users encounter is when you are trying to open a folder or a location on File Explorer and it displays a message saying, “Working on it…” as it tries to load the content of that location or folder. This kind of issue mainly occurs to computers that run on an HDD although that doesn’t mean that it can’t happen to other computers that run an SDD. And so if the File Explorer on your Windows 10 computer keeps getting stuck on the “Working on it…” message along with a green animation bar moving very slowly while loading the contents of the folder, then it’s best if you follow the options given below to resolve this problem.

Option 1 – Try deleting the contents of the Automatic Destinations folder

• Tap the Win + R keys on your keyboard to open the Run utility.
• And then type “%AppData%MicrosoftWindowsRecentAutomaticDestinations” and hit Enter to open this location.
• From there, select all the files and tap the Shift + Delete key combination.
• After that, you will get a prompt that will ask you if you want to delete all the files permanently, just click on Yes. This will delete all the Quick Access cache.
• Now check if you can now open a folder or a location without the “Working on it…” message.

Option 2 – Try to rebuild the Search Index

• First, open the Indexing Options using the Search bar.
• Next, click on the appropriate listing, e.g. Users folder.
• After that, click on the Advanced button. This will open a mini-sized window and from there, go to the Index Settings tab.
• Then click on the “Rebuild” option under the Troubleshooting section.
• Now click on OK after the rebuilding is completed. This should rebuild the search index for all the files and thus, fix the File Explorer stuck on the “Working on it…” message.

Option 3 – Try to optimize the folder for General Items

You might also want to try optimizing the folder for General Items as it can help the File Explorer to load the contents faster.

• Just right click on the folder that takes time to load the contents in it and is showing the “Working on it…” message.
• After that, click on Properties to open the Properties mini window.
• From there, go to the Customize tab and click on the drop-down menu to “Optimize this folder for” under the “What kind of folder do you want?” section and then select General Items.
• Then check the checkbox with a label that says, “Also apply this template to all subfolders” and click on the OK button to save the changes.
• Restart File Explorer and check if the problem is now fixed or not.

Option 4 – Try performing a System Restore

Running System Restore can also help you resolve whatever issue that’s causing the “Working on it…” message. 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.

As you know, the Mobile Hotspot feature is used to share the internet connection with other devices using Wi-Fi signals. These Wi-Fi signals are later caught by other devices using their Wi-Fi and then the internet connection is shared once they are connected. However, recently, some users reported that their devices weren’t able to see the Wi-Fi network even if their Wi-Fi is on. This kind of problem could be caused by several factors but one of the main ones include the frequency at which the Wi-Fi network is being broadcasted. If you are one of the users who are currently facing this problem, read on as this post will guide you on what you can do if the Mobile Hotspot or Wi-Fi connection does not show up or is not detected on your Windows 10 device. In most cases, there are only two frequencies at which a Wi-Fi network is broadcasted. They are broadcasted either at 2.4 GHz and 5 GHz. The ones that are broadcasted at 5 GHz need specific hardware since it is a newer technology compared to the ones at 2.4 GHz. There are several other pieces of equipment as well as electrical appliances that operate at 2.4 GHz that includes microwaves as well which causes disruption in the signal strength of the Wi-Fi network. Moreover, aside from signal interruption, this issue with the mobile hotspot might also have something to do with the network-related drivers in your computer. Thus, to fix the problem, here are some suggestions you should follow.

Option 1 – Try toggling the Network band or the frequency at which the Wi-Fi network is broadcasted

• First, open the Windows 10 Settings app and then navigate to Network & Internet > Mobile hotspot.
• From there, click on the Edit button located under the Network name, Network password, and Network band.
• After that, set the Network band to be at 2.4 GHz and then click on the Save button.
• Once done, restart the Mobile hotspot in your Windows 10 device as well as the Wi-Fi connection of the device that’s trying to connect to the hotspot.

Option 2 – Try running the Network Adapter Troubleshooter

If the first option didn’t work, you might also want to run the Network Adapter Troubleshooter. You can use it to troubleshoot the problem with the Mobile hotspot, to run it, follow these steps:

• Open the Search bar on your computer and type in “troubleshoot” to open the Troubleshoot settings.
• Next, scroll down and select the “Network Adapter” option from the right pane.
• Then click on the Run Troubleshooter” button.
• After that, your computer will check for any possible errors and will pinpoint the root cause of the problem if possible.

Option 3 – Try updating the Network adapter driver

As mentioned, the problem could also be due to the network-related drivers. So it probably might be the reason why you’re mobile hotspot did not appear or was not detected. That’s why it is recommended that you update the Network adapter driver and to do it, refer to these instructions: Follow the steps below to update your Network Adapter Driver:

• Tap the Win + R keys to launch the Run window and then type in the “MSC” command and hit Enter to open the Device Manager window.
• From there, expand the list of all the network drives and update each one of them.
• Restart your PC and see if it helped in fixing the issue with the mobile hotspot.

Note: If updating the network drivers didn’t help in fixing the problem, you can also try to uninstall the very same drivers and restart your Windows 10 PC. After that, the system itself will reinstall the drivers you just uninstalled. Alternatively, you can also download and install the drivers from the manufacturer’s website directly.

The Windows 10 operating system comes with a user-friendly interface as well as better security features compared to its previous versions. One of these new features is the “Recently Opened Files” feature which displays all the files you’ve opened recently in File Explorer. Although it might seem useful, some users see this as a privacy concern especially if there are other users that use the same computer. If you are one of these users, read on as this post will guide you on how you can disable the “Recently Opened Files” feature in Windows 10. There are three ways you can disable the “Recently Opened Files” feature. You can manually clear the recent files, or disable the feature via Control Panel. You can also do it using the Group Policy Editor.

Option 1 – Manually clear the recent files

The first thing you can do is to clear the recent files manually. Since the information about the recently opened files is stored in the form of cached data, you can locate this data and delete it manually, from time to time. To do that, follow these steps:

• Tap the Win + R keys to open the Run utility and copy this address in the field: %AppData%MicrosoftWindowsRecent
• Next, tap the Ctrl + A keys to select all the items and then tap the Shift + Delete keys simultaneously.
• After that, a prompt will appear where you have to click on Yes. This will delete all the recently opened files in the File Explorer the next time you open it.

Option 2 – Disable the feature via Control Panel

The next option you can try to disable the feature is via Control Panel. Refer to these steps to do so:

• First, click on the Start Menu button and select the Settings icon.
• After that, click on Personalization and then on Start located on the left pane.
• Next, scroll down until you see the “Show recently opened items” in Jump Lists on the Start or the Taskbar and click on it and then toggle it off.

Option 3 – Disable the feature using the Group Policy Editor

If you are using the Windows 10 Pro version, then you have access to edit the functions in the Group Policy. The Group Policy function has the option that can disable all the default services of Windows 10. Note that in this step, you will permanently disable the “Recently Opened Files” feature. So before you proceed, make sure that you really want to disable this feature permanently and not in the meantime.

• Tap the Win + R keys to open the Run dialog box and type “gpedit.msc” in the field and click OK or tap Enter to open the Group Policy Editor.
• Next, on the left side pane, click on the “User Configuration” option and then click the “Administrative Templates” option.
• After that, select the “Start Menu and Taskbar” option and select the “Don’t keep the history of recently opened documents” option in the right pane.
• Now double click on this option and check the “Enabled” option and then click on Apply and OK buttons to save the changes made.

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!