How to fix Windows 10 Store Error 0x801901F7

As you know, the Windows Firewall is designed not just to protect your computer from viruses and malware, and other security threats but it’s also designed to block any program from accessing the internet. Users are given the option to block both inbound and outbound traffic for any apps on their computers. However, this kind of option can often lead to not being able to access the internet. In such cases, when you try to run the Windows Firewall Troubleshooter or the Windows Network Diagnostic troubleshooter, it will throw an error message that says, “Windows Firewall is preventing connections to your computer. The Windows Firewall rule HSS DNS Leak Rule may be blocking your connection”. If you are in this kind of scenario, then you’ve come to the right place as this post will guide you on how exactly you can fix this error. When you encounter this kind of error, there are several options you can check out to fix it. You can try to allow an app or feature through the Windows Firewall or uncheck the HSS DNS leak rule in both private and public. For more details, refer to the suggestions provided below.

Option 1 – Try to allow an app or feature through Windows Firewall

The first thing you can do to get rid of the error is to allow a feature or app through the Windows Firewall. To do this, follow these steps:

• Open the Windows Defender Security Center.
• From there, select the Firewall and Network Protection option.
• Next, click on the “Allow an app through firewall” option and then click on the “Change Settings” button and make sure that you have administrative privileges.
• After that, select the app or feature you want to allow through the Firewall from the menu. You also have the option to manually add the app by using the “Add an App” option.
• Then select the between the type of network an app can access such as:
  • Private Network will allow the app to connect to the internet only at home or work.
  • Public Network will allow the app to connect to the internet from anywhere, including Public WiFi hotspots.

• Once done, restart your computer and see if it fixed the error or not.

Option 2 – Try to uncheck the HSS DNS leak rule in both private and public

The next thing you can do to fix the error is to uncheck the HSS DNS leak rule in both private and public. You can do this by following these steps:

• Open the Windows Defender Security Center.
• From there, select the Firewall and Network Protection option.
• After that, click on the “Allow an app through firewall” option and then click on the “Change Settings” button and make sure that you have administrative privileges.
• Next, scroll down until you see the HSS DNS leak rule in both private and public option and then uncheck it.
• Now restart your computer and check if the error is now gone.

Code 0xC1900208 0x4000C, What is it?

The Error Code 0xC1900208 – 0x4000C is an error that is caused by an installed application or program on your computer that is not compatible with Microsoft Windows 10. The incompatible application prevents you from being able to complete the upgrade to Microsoft Windows 10 and will continue to do so until the issue is resolved. Common symptoms include:

• You receive a dialog box displaying Error Code 0xC1900208 – 0x4000C
• You are unable to successfully complete the Microsoft Windows 10 upgrade process.

Solution

Error Causes

Error Code 0xC1900208 – 0x4000C is caused by a non-compatible application or program that is currently installed on your computer, and is not allowing the Microsoft Windows 10 upgrade to finish the installation and update process.

• The upgrade is stopped due to an incompatible app or program.
• Out of date or no longer supported software can cause this error to occur.
• Device drivers that are not up to date or no longer compatible.
• The computer might pick up malware along the way and might be preventing the upgrade. If error code 0xC1900208 – 0x4000C is not rectified, you’ll not be able to proceed with your Windows 10 upgrade.

Further Information and Manual Repair

The good news is, error code 0xC1900208 – 0x4000C is a relatively common problem that is usually easily fixed by the user at home, though it can be a little time-consuming. To elude this time-consuming process, use a powerful tool to rectify the issue in no time (TSC). Before making any attempts to repair this error, ensure to perform a compatibility test.

• Check the compatibility of applications and programs installed on your computer to locate and remove, or fix the one that is incompatible. (Don't stop at the first one you find, there could be multiple incompatibility issues.)
• Check to ensure all programs and software are not outdated or no longer supported, and remove or fix any outdated or unused, unnecessary programs or software. (This is also a great way to free up space and clean your computer up a bit.)
• Check to ensure that all of your device drivers are current, up to date, and compatible with Microsoft Windows 10, and replace or update where necessary.

Method 1:

Use the get Microsoft Windows 10 application on your computer to check its compatibility, follow the steps below to run the check.

1. Look at the taskbar, to the right; you will see an icon for Microsoft Windows 10, right-click the icon. Locate the option in the menu to check the status of your upgrade. This will open an app for getting Microsoft Windows 10.
2. Next, you will see 3 lines on top of one another on the upper left side, this will open a drop-down menu, once you have this menu open, locate the option to check the compatibility of your computer.
3. Microsoft Windows will then run a check of your entire computer to check for compatibility with Microsoft Windows 10. Once it has finished its check, a pop-up window will display whether or not your computer will work with Microsoft Windows 10, and will also display a list of any hardware and software that are not compatible with the upgrade.
4. This may not catch everything and there may still be incompatible programs so the previous steps, though time-consuming may still be necessary.

Method 2:

Once the incompatible applications are discovered, use the control panel to remove/uninstall them. The steps are below:

1. Locate your computer’s Control Panel.
2. Choose the option that says “Programs”
3. From the options available, select the ‘Programs and Features’ link.
4. Locate the app in the queue or menu.
5. Right-click and choose the uninstall option.

Toolbar.Dll is one of the most destructive software you will encounter on your Personal Computer. For every report out there you read about threats to your Windows PC, a significant number speak about Toolbar.Dll. Technically, this is non-essential to the functioning of your computer yet poses great dangers to your computer's security. It can cause massive destruction if not properly resolved.

Solution

Error Causes

As suggested below, the sources of Toolbar.Dll are many and broad: a) Misconfigured System: Nothing causes this malfunction on your own Computer a lot more than having a misconfigured system. You ought to anticipate this malfunction and repair the situation before it gets worse. Especially if you have Toolbar.Dll files on your computer. More often than not the situation can only get worse. b) Broken Windows OS File: the 2nd trigger of Toolbar.Dll, and that is linked to the primary aforementioned one, is a broken Windows OS file. Fix it as soon as you realize its existence. c) Installation Issues: If you poorly install Windows on your PC, you generate a loophole by which Toolbar.Dll malfunction might appear. You essentially provide a massive possibility to the Toolbar.dll error to affect your Computer, if you neglect to finish an install or uninstall procedure. d) Removing Programs and Hardware Incorrectly: When you decide to remove programs and hardware, you need to exercise caution. Should you be rash with this specific procedure, you raise the odds of striking the Toolbar.Dll malfunction on your Personal Computer. e) Incorrect Shut-Down: unless you want to strike this malfunction, ensure that you shut down your Computer procedurally. Regardless of what hurry you might be in, always power down your computer correctly.

Further Information and Manual Repair

In the event you strike the Toolbar.Dll malfunction on your Personal Computer, you shouldn't get frightened. But, prior to starting considering of ways that to fix this malfunction, you should look for the signs, to be able to recognize it. The malfunction exists in your Computer in circumstances where software programs can't load properly. The situation might be repaired in numerous methods, as revealed below:

• Switch on your computer, and log in as the superuser/admin. Next, select All Programs, subsequently go to Accessories. Under Accessories, choose System Tools. Click on System Restore from the menu.
• A fresh window will appear. In the new window, find the choice designated "Restore My Pc To An Earlier Time", before you click next.
• Search for the newest System Restore update from "On This List, Click a Restore Point" before you click Next once more.
• Pick Next when a verification window appears on the screen. After the complete procedure is done, reboot the pc and the Toolbar.Dll malfunction will soon be no further.

Each of the measures suggested previously, are for advanced pc users. You must obtain the very best software on the web to eliminate this malfunction, in case you are a non-techie. Alternately, contact a tech to help fixing the problem.

As you know, one of the most highlighted features of Windows 10 is Windows Updates. It was offered to the customers as a service rather than a product with the release of Windows 10 under the scenario of Software as a Service which led to Windows Updates being set by default on Windows 10 and without an option for any users to disable it. Although not all users are happy with what Microsoft did, this is an ultimate step towards the greater good of all its customers since Windows Updates helps users in keeping their computers secured against all kinds of threats as well as provide them with the greatest and latest updates from Microsoft. So if you are one of those users who approved of the Windows Updates service, then read on as this post will guide you in running Windows Updates from Command Line either via Command Prompt or Windows PowerShell. For the complete set of instructions, refer to the options given below.

Option 1 – Run Windows Update via Command Prompt

Command Prompt in the Windows operating system exists for a very long time now compared to the comparatively new Windows PowerShell. That’s why it has similar capabilities to run Windows Updates. However, the highlighting point here is that you don’t have to download any module for Windows Updates. To get started running Windows Updates using Command Prompt, refer to the steps below.

• First, type “cmd” in the Cortana search box, and from the search results, right-click on Command Prompt and select the Run as Administrator option to open it with Administrator privileges.
• If a User Account or UAC prompt appears, just click on Yes to proceed.
• Next, type in the commands listed below, and don’t forget to tap Enter right after you type each one of them.
  • UsoClient StartScan – use this command to start checking for updates.
  • UsoClient StartDownload – use this command to start downloading updates.
  • UsoClient StartInstall – use this command to start installing the downloaded updates.
  • UsoClient RestartDevice – use this command to restart your computer after you install.
  • UsoClient ScanInstallWait – use this command to check, download and install updates.

Note: Keep in mind that the commands in Command Prompt listed above are only meant for Windows 10. On the other hand, if you are using an older Windows version, you can try using the following commands instead:

• wuauclt /detectnow – use this command to start checking for updates.
• wuauclt /updatenow – use this command to start installing the updates detected.
• wuauclt /detectnow /updatenow – use this command to check, download and install updates.

Option 2 – Run Windows Updates via Windows PowerShell

If you run Windows Updates in the Windows PowerShell, it will require you to install the Windows Update module manually. Hence, you have to get the Windows Updates downloaded and install Windows Updates.

• Search for PowerShell in the Cortana search box and then run it with administrator privileges.
• Once you’ve opened the Windows PowerShell, type the following command and hit Enter.
  • Install-Module PSWindowsUpdate – use this command to install the Windows Update module for Windows PowerShell.
  • Get-WindowsUpdate – use this command to connect to the servers of Windows Update and download the updates if found.
  • Install-WindowsUpdate – use this command to install the Windows Updates you’ve downloaded to your computer.

Code 0x800488AB – What is it?

The Error Code 0x800488AB will appear when a user is in the Windows 10 Mail app and has provided an Outlook.com e-mail address. The mail app will give a message that the “account information is out of date” and it does provide an option to fix the issue. After clicking the Fix button, this error code will show up to the user. Common symptoms include:

• A dialog box will appear with the Error Code 0x800488AB
• Microsoft Windows 10 Mail App will not retrieve (or subsequently send) mail
• User cannot delete and re-add the Outlook email account in the Windows 10 Mail app
• User can still access and log in to various Microsoft websites, including logging into the Outlook Mail website

Solution

Error Causes

This error can be caused by a few different actions of the user when they have changed a password or a PIN number to access their Outlook mail. This error does have a relatively easy fix after the cause is determined and where the break-in information has occurred. A few of the causes may be:

• If the user changes their password on the Microsoft website and uses the alternative PIN login method to access the Mail App.
• The log-in information on the Microsoft website does not match the login information on the Windows 10 App.
• The login information was changed on the Microsoft website and was not updated to reflect on the Windows 10 Mail app.

The Microsoft website and Microsoft Mail app do not share the knowledge of the change in login credentials, therefore the log-in credentials appear to be incorrect when trying to access the Microsoft Mail app. It should be noted that a user may bypass the password option if they log in to the Microsoft Mail app while using the alternative PIN log-in method, thus still leaving the password undetected.

Further Information and Manual Repair

As is the case with all new technology and having a few wrinkles, the release of Microsoft Windows 10 is not left out. There have been a few discussions of errors and bugs, including Error Code 0x800488AB. As of right now, there are three different methods that can be utilized by any at-home user. These methods are rather simple and make sense when the problem has been identified.

Method 1:

Run the built-in Windows Store Apps troubleshooter:

1. Press the Windows Key and then type ‘troubleshoot’ and hit Enter
2. Select “View all” on the left panel and run the “Windows Store Apps” troubleshooter from the list displayed and see if it works.

Method 2:

Use the System File Checker tool to repair corrupted or missing system files:

1. Click Start.
2. Type cmd, and then press CTRL+SHIFT+ENTER to open the elevated command prompt (I.e. Command prompt with administrative rights).
3. The User Account Control window should appear, be sure that the action it exhibits is correct, and then press the Continue button.
4. Type or copy-paste the below command line into it without quotes:

“Sfc /scannow”

Method 3:

1. Press the Windows Key
2. Search for "Credentials Manager"
3. Click on Windows Credentials
4. Look for any reference to your windows account (generally your @outlook.com is listed)
5. Delete them.
6. Then select your account at the top of the start menu and select Log Out.
7. If using a Pin Code, switch to type input and put your password into the box.

When you go to Mail, and select "Fix Issues" it will detect your password and your account should sync with new emails. In some cases, depending on why this particular error code was caused, you may have to use a powerful automated tool to have it resolved.

There are times when after you upgrade your Windows operating system, the System Logs under the Event Viewer will display an error message saying, “Event ID 10010 error – The server did not register with DCOM within the required timeout”. What is DCOM? DCOM stands for “Distributed Component Object Model”. It is a proprietary Microsoft technology that allows the Component Object Model or COM software to communicate across a network. You can consider it as an extension of COM which is equipped with the capability of solving a couple of inherent problems related to the COM model to the better use over a network. COM is a tool that’s used for advanced configuration and troubleshooting in Windows 10. Developers usually use it to configure routine components and application behavior like participation in transactions and object pooling and so on. The Component Services needs the DCOM wire protocol in order to communicate with the Component Object Model components on other computers. By default, in a Windows-based system, the network computers are configured initially to enable DCOM. There are also some components in Windows that might require registering themselves with DCOM. However, if they fail to do so, you will encounter the “The server did not register with DCOM within the required timeout” error. To fix this, here are some suggestions you can check out.

Option 1 – Try to use the Component Services

• Tap the Win + R keys to open the Run dialog box.
• Then type “dcomcnfg” in the field and tap Enter to pull up Component Services.
• Next, double click on the Computers folder located in the right pane and right-click on My Computer, and select the Properties option.
• After that, switch to the COM Security tab under My Computer Properties and then go to the Access Permissions section.
• From there, click the Edit Default button and in the new window that appears, apply the correct permission to objects under the Group or user names section.
• Once you’re done, click OK and exit. This should fix the error.

Option 2 – Make sure that Function Discovery Resource Publication Properties Services is running

• In the Cortana search box, type “services” and click on the Services icon to open the Services Manager. Alternatively, you can also tap the Win + R keys to launch the Run prompt and then type “services.msc” in the field and hit Enter to open the Services Manager.
• Next, scroll down and look for the “Function Discovery Resource Publication” entry and double click on it.
• Then switch to the General tab and from there, make sure that the Startup Type is set to “Manual (Triggered).
• You also have to make sure that the service is running so if it’s not, just click on the Start button to start the service.
• Now click on Apply to save the changes made.

Option 3 – Try resetting the default DCOM permissions

• Tap the Win + R keys to open the Run dialog box.
• Then type “dcomcnfg” in the field and tap Enter to pull up Component Services.
• After that, expand Component Services > Computers and right-click on My Computer, and then select Properties.
• Next, go to the Default Properties tab, and in the Default Distributed COM Communication Properties section, make sure that:
  • Default Authentication Level is set to Connect
  • Default Impersonation Level is set to Identify.

This post will help you fix the request that failed due to a fatal device hardware error on your Windows 10 PC. You can encounter this error when that hard drive/SSD on your computer is damaged physically and the system is either unable to access or perform read/write operations in it. Aside from hard drive/SSD, this error can also happen to removable drives. This kind of error is not uncommon and in most cases, the hardware is physically damaged due to which you are not able to perform operations. However, there are a couple of fixes that you can try to resolve the problem before you go ahead and back up your data and move them to a different drive. What exactly causes this error? It’s actually self-explanatory and it gives you an idea that the drive is either corrupted or in a bad state. To resolve the error, follow the given options below carefully and see which one worked best for you.

Option 1 – Verify the hard drive using SMART attributes

In case you don’t know, Windows has a built-in feature of SMART analysis which analyzes the hard drive/SSD and checks all the parameters by performing some minor operations. To use it, follow these steps:

• Tap the Win + S keys and type “command prompt” in the field then right-click on the related search result and select the “Run as administrator” option.
• After opening Command Prompt as admin, type the “wmic diskdrive get status” command and hit Enter.
• You should get a result after that, and if you see that it’s “normal”, proceed to the next option below.

Option 2 – Use the CHKDSK utility

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 [volume [[path] filename]] [/F] [/V] [/R] [/X] [/C] [: size]]

Note: In the command given above, “[/F]” will try to fix the system errors while “[/R]” will be the one to fix the bad sectors.

• Now if you are prompted to run CHKDSK after your reboot your PC, 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.

Option 3 – Format your drive

You can try formatting your drive since this problem also occurs on removable hard drives. In addition, if your drive is not properly initialized, this error will really pop up. Thus, you need to make sure that the hard drive is initialized and that the correct partition style is selected.

• To get started formatting your drive, tap the Win + E keys and then go to the access page of the drive.
• Next, right-click on the drive and select Format.
• After that, uncheck the “Quick Format” option and then format your drive properly.
• Now once the formatting process is finished, unplug the drive and plug it back in afterward.
• Check if the error is already fixed. If the drive is not initialized, tap the Win + R keys and hit Enter.
• After opening the Run dialog box, type “diskmgmt.msc” and hit Enter to open Disk Management.
• From there, right-click on the drive volume and select Initialize Disk.
• Next, select the correct partition type and proceed.

That should fix the problem, if not, follow the next advanced option below.

What is Windows ImageAcquisition High CPU & Disk usage? The Windows Image Acquisition is the driver model in charge of the communication between the graphics hardware and the operating system. There are times when it causes high disk and CPU usage in Windows 10 systems which results in slow performance of the computer. To fix this issue, read on as this post will help you in addressing the problem. The cause of this problem might have something to do with the hardware or the drivers. And so if your computer becomes slow because of the Windows Image Acquisition process, here are some suggestions that might be of help. You can try to restart the Windows Image Acquisition service, run a System File Checker Scan, disconnect & reconnect imaging hardware as well as update and reinstall the drivers and updating the graphics drivers. For a complete set of instructions, follow the given options below.

Option 1 – Try restarting the Windows Image Acquisition Service

• Tap the Win + R keys to open the Run dialog box.
• Then type “services.msc” in the field and hit Enter to open the Windows Services Manager.
• From there, look for the Windows Image Acquisition Service and check on its service Status.
• If the Service Status is blank, right-click on it and select Start. And if the service Status is Running right-click on it and select Restart. After that, check if your computer’s performance is now back to normal.

Option 2 – Try running a System File Checker scan

As you know, running a System File Checker scan can help in replacing missing files as well as repair the corrupted ones which might be the reason behind the problem.

• 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.

• Restart your computer after the scan is completed.

Option 3 – Try disconnecting and reconnecting the imaging hardware and then update and reinstall its drivers

It could be that the hardware that calls for the Windows Image Acquisition service has some issues which are why disconnecting and reconnecting the imaging hardware like scanners, printers, cameras can help in fixing the problem. In addition, you can also boot your computer in a Clean Boot State so that you can find the problematic hardware by hit and trial method. Refer to the steps below to do so:

• 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.)

Option 4 – Try updating the Graphics drivers

• 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 Display Adapters and click on them.
• After that, right-click on each entry under the Display Adapters and select the “Uninstall Device” option from the menu.
• Now restart your computer.
• After restarting your computer, go to the Settings app and Check for Updates in the Windows Update section.

Note: You also have the option to go directly to the website of your graphics card manufacturers like NVIDIA, Intel, or AMD and go to the section called Drivers then check if there’s a new available update – if there is, download and install it.

One of the cool and interesting features in Windows is the Screensaver which allows users to display animation or change the wallpaper automatically when the computer is not being used. This feature can also time out and lock your computer when it remains idle for quite some time. However, if you notice that the screensaver of your computer turns on a lot earlier, then you’ve come to the right place as this post will guide you on how you can change the timeout settings of the screensaver of your Windows 10 computer. Usually, the screensaver in Windows 10 is turned off by default, however, if some other user has turned it on or if you have turned it on, you can actually change the timeout settings of the screensaver using several methods. You can do it through the Personalization settings, Registry Editor, as well as the Group Policy Editor. Before you proceed with the instructions provided below, make sure that you create a System Restore point first. Once done, follow each one of the suggestions carefully to successfully change the Screensaver timeout settings in Windows 10.

Option 1 – Modify the timeout settings of Screensaver via Personalization settings

• Open the Start menu and type “screen saver” in the field.
• On the search results that appear, click on the “Change Screen Saver” option.
• From there, you have the option to change the screen saver type, preview, open settings, change the wait time, as well as choose to display lock screen on your resume.
• Now to change the timeout settings of your screensaver, you have to increase the wait time from 1 to 15 or anything that works for you.
• Once done, click OK and exit to save the changes made.

Option 2 – Try to change the screensaver time via Registry Editor

The next option you can try to change the timeout settings in the screensaver is using the Registry Editor. To get started, follow these steps:

• Tap the Win + R keys to launch the Run utility and type “regedit” in the field and hit Enter to open the Registry Editor.
• Next, navigate to this registry path: ComputerHKEY_CURRENT_USERSoftwarePoliciesMicrosoftWindows
• From there, right-click on Windows located in the right pane and select New > Key.
• Name the key as “Control Panel” and right-click on it and select New > Key and then name it as “Desktop”.
• Once done, click on the newly created Desktop key to highlight it.
• After that, right-click on any empty space in the right pane and select New > String Value and then type “ScreenSaveTimeOut” and hit Enter to save it.
• Now right-click on ScreenSaveTimeOut and select Modify and then set its value data in seconds.
• Click on OK and exit the Registry Editor to save the changes made.

Option 3 – Change Screensaver timeout settings via Group Policy Editor

• Tap the Win + R keys to open the Run dialog box and type “gpedit.msc” in the field and hit Enter to open the Group Policy Editor.
• Next, navigate to User Configuration > Administrative Templates > Control Panel > Personalization.
• Then look for a policy setting named “Screen saver timeout” and double click on it and then click on the Enabled option to enable it.
• Add the screen timeout in seconds and click on the Apply and OK buttons to save the changes.
• Restart your computer.

Note: If you want to disable the screensaver feature in your computer, you can always do so by disabling a policy setting named “Enable Screen Saver”.

Upgrading your Windows computer may not always go as expected as you could end up getting some error messages along the way. One of the error messages you can encounter is the “STOP 0XC000021A or STATUS_SYSTEM_PROCESS_TERMINATED” error. This error indicates that is some security issue within the Windows operating system. It could be that the system files have an issue and they have been modified incorrectly. Although this does not necessarily mean that malware is behind the modification, one of the applications you installed recently might have something to do with the problem. The application might have modified or corrupted some of the core system files. When you encounter this error, you will see a blue screen along with the following error message:

“Your PC ran into a problem and needs to restart. We’re just collecting some error info, and then we’ll restart for you. (0% complete) If you’d like to know more, you can search online later for this error: 0xc000021a”

This error pops up when a user-mode subsystem like the WinLogon or the Client Server Run-Time Subsystem or CSRSS has been compromised fatally and security can no longer be guaranteed in the system. Thus, the operating system switches to kernel mode, and Windows won’t be able to run without the WinLogon or the Client Server Run-Time Subsystem. This is why it’s one of the few cases where the failure of a user-mode service can shut down the system. To resolve the issue, here are some fixes that might help.

Option 1 – Uninstall programs you installed lately

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

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

Option 2 – Perform System Restore

Performing System Restore can also help you fix the “STOP 0XC000021A or STATUS_SYSTEM_PROCESS_TERMINATED” 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.

Option 3 – Run the System File Checker or SFC scan

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 getting the “STOP 0XC000021A or STATUS_SYSTEM_PROCESS_TERMINATED” error. To run the SFC command, follow the steps given below.

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

Option 4 – Rebuild the BCD and fix MBR

Rebuilding the BCD can help you in fixing the “STOP 0XC000021A or STATUS_SYSTEM_PROCESS_TERMINATED” error.

• You can start by booting into the installation environment for Windows 10 from an installation media.
• After that, click on Repair your computer and on the blue screen, select Troubleshoot and then select the Advanced options menu.
• Next, select Command Prompt and type in the commands below one by one, and tap Enter right after you do so.
• exe /FixMbr
• exe /FixBoot
  • exe /RebuildBcd

The commands you entered should rebuild the BCD and repair MBR.

Option 5 – Run the CHKDSK utility

You can also run the Chkdsk utility to resolve the problem. If your hard drive has issues with integrity, the update will really fail as the system will think that it’s not healthy and that’s where the Chkdsk utility comes in. The Chkdsk utility repairs hard drive errors that might be causing the problem.

• Open Command Prompt with admin privileges.
• After opening Command Prompt, execute the commands listed below, and don’t forget to hit Enter right after you type in each one of them.
• chkntfs /t
• chkntfs /t:10