FindGoFind Browser Hijacker Removal Guide

What is Search.schooldozer.com? And how does it function?

Search.schooldozer.com is a browser extension that functions as a search engine. It is developed and maintained by “Schooldozer”. It claims to improve users’ browsing experience by providing them with improved search results. However, it does not really do the things it claims to do. In fact, they’re quite the opposite ones – instead of improving the browsing experience, it makes users’ browsing experience unsafe and full of sponsored content. This is in contrast to what it states in its Privacy Policy:

“Install applications the easy way and without the hassle, using the Schooldozer downloader. The Schooldozer platform stems from years of experience with installing applications, resulting in a highly optimized process, yielding faster downloads, better user experience, and more successful installations.”

In addition, once installed Search.schooldozer.com is installed, it will change the default settings of a browser such as the default search engine, homepage, and new tab page. This is why security experts regard this browser extension as a browser hijacker and a potentially unwanted program. The modification of the browser's settings allows it to control users’ browsing by redirecting them to sponsored sites as well as deliver sponsored content from its affiliated sites in order to gain profit via pay-per-click marketing. And if you think that the ads it displays are harmless, think again for some of these ads can redirect you to suspicious websites that might contain harmful content. What’s more is that this browser hijacker can also keep track and monitor all your browsing activities in order to obtain your browsing data like search queries, what sites you always visit, browsing history, browser type, OS version, and so on. The information collected is then used and may even be shared with its affiliated third parties to deliver more customized and personalized advertisements.

How is Search.schooldozer.com distributed over the web?

Like a typical browser hijacker, Search.schooldozer.com is distributed using the software bundling method where several unknown and unwanted programs are bundled in a software package. Thus when you install any software bundle, make sure to always opt for the Custom or Advanced installation setup rather than the quick setup to avoid installing unwanted programs like Search.schooldozer.com. To remove Search.schooldozer.com from your computer, follow the removal guide below carefully. Step 1: Start the removal process by closing all the browsers infected with Search.schooldozer.com. If you’re having a hard time closing them, you can close them using the Task Manager just tap on Ctrl + Shift + Esc. Step 2: After you open the Task Manager, go to the Processes tab and look for the infected browser’s process and end it. Step 3: Then close the Task Manager and tap the Win + R keys to open Run and then type in appwiz.cpl to open Programs & Features in Control Panel. Step 4: From there, look for Search.schooldozer.com or any unfamiliar program that could be related to it under the list of installed programs and once you’ve found it, uninstall it. Step 5: Edit your Hosts File.

• Tap the Win + R keys to open then type in %WinDir% and then click OK.
• Go to System32/drivers/etc.
• Open the host file using Notepad.
• Delete all the entries that contain Search.schooldozer.com.
• After that, save the changes you’ve made and close the file.

Step 6: Reset all your browsers to default to their default state.

Google Chrome

1. Launch Google Chrome, press Alt + F, move to More tools, and click Extensions.
2. Look for Search.schooldozer.com or any other unwanted add-ons, click the Recycle Bin button, and choose Remove.
3. Restart Google Chrome, then tap Alt + F, and select Settings.
4. Navigate to the On Startup section at the bottom.
5. Select “Open a specific page or set of pages”.
6. Click the More actions button next to the hijacker and click Remove.

Mozilla Firefox

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

Internet Explorer

1. Launch Internet Explorer.
2. Tap Alt + T and select Internet options.
3. Click the General tab and then overwrite the URL under the homepage section.
4. Click OK to save the changes.

Step 7: Hold down Windows + E keys simultaneously to open File Explorer. Step 8: Navigate to the following directories and look for suspicious files associated to the browser hijacker such as the software bundle it came with and delete it/them.

• %USERPROFILE%Downloads
• %USERPROFILE%Desktop
• %TEMP%

Step 9: Close the File Explorer. Step 10: Empty the contents of Recycle Bin.

The GeForce Experience on graphics card manufactured by NVIDIA is an advantage for users who loves gaming as it makes enhances users’ gaming experience. However, there are times when it may also encounter some problems. One of the problems users may encounter is the error code 0x0001. This kind of error occurs when users open the NVIDIA GeForce Experience utility. Here’s the full content of the error message:

“Something went wrong, try rebooting your PC and then launch GeForce Experience, ERROR CODE: 0x0001.”

Errors like this one diminish the overall experience of users due to the fact that when this error occurs, the NVIDIA GeForce experience wouldn’t even start which renders its features useless. There are several potential fixes you can check out to resolve this error but before you check them out, you can try to restart your computer first and then open the NVIDIA GeForce Experience once again, if you still encounter the error, then you need to check the NVIDIA Display Driver Services or update your NVIDIA display drivers or switch to the BETA release. You could also try to install and reinstall the NVIDIA display drivers or perform System Restore and see if it helps. For detailed instructions, follow the given options below.

Option 1 – Try to check the NVIDIA Display driver services

• Tap the Win + R keys to open Run and then type “services.msc” in the field and hit Enter to open the Services Manager.
• From there, look for the following NVIDIA services and make sure that their Startup types are as follows:
  • NVIDIA Display Container LS – Automatic
  • NVIDIA NetworkService Container – Manual
  • NVIDIA LocalSystem Container – Automatic
  • NVIDIA LocalSystem Container – Automatic
  • NVIDIA GeForce Experience Service – Automatic (Delayed Start)
  • NVIDIA Geforce Experience Backend Service – Automatic (Delayed Start)
  • NVIDIA Telemetry Container service – Automatic
• Next, double click on each one of the services and go to Properties. Here, check if the service is running. If it’s not, just click on the Start button. On the other hand, if they’re already running, just click on Stop and then click on Start again.

Option 2 – Try to update the NVIDIA Display drivers

You can also try updating the NVIDIA display drivers as it might help in fixing the error. To update them, follow the steps below.

• Tap the Win + R keys to open the Run dialog box.
• Next type in “dxdiag” in the field and click OK or hit Enter to open the DirectX Diagnostic Tool.
• From there, you can see what type of NVIDIA graphics card that your system is on.
• Take note of your graphics card information and then look for the best drivers for your operating system. Once you’ve downloaded and installed the file, restart your PC.

Note: If you want to try out the beta release of the NVIDIA display drivers, click on this link. Beware though that the beta software is unstable and buggy and may cause some different bugs.

Option 3 – Try to roll back the driver to the previous version

If updating the NVIDIA display drivers didn’t work for you, then it’s time to roll back the device drivers. It is most likely that after you updated your Windows computer that your driver also needs a refresh.

• 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.
• Under the Device Manager, you will see a list of drivers. From there, look for the NVIDIA Drivers and expand it.
• Next, select the driver entries that are labeled appropriately.
• Then select each one of them and double click to open a new mini window.
• After that, make sure that you’re on the Driver tab and if you are not, just navigate to it then click the Roll Back Driver button to switch back to the previous version of the NVIDIA Drivers.
• Now restart your computer to successfully apply the changes made.

Option 4 – Try to run System Restore

You could also run System Restore as it might help fix the error code 0x0001 in NVIDIA GeForce Experience.

• 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 then check if the error code 0x0001 in GeForce Experience is now fixed.

Option 5 – Do a clean install on the NVIDIA driver

• Before you do a clean install on the NVIDIA driver, you have to download the latest version of the Display Driver first.
• Boot your Windows 10 PC into Safe Mode.
• After that, double click on the executable file of the Display Driver Uninstaller to run and install it.
• After the installation, open the program. Once you do, you should see the following window on your screen:
• In the program window, click on the “Clean and restart” button.
• After your PC has rebooted, download the NVIDIA drivers.
• Then select your Product Type, Product Series, Product, Operating System, and Language appropriate for your hardware specifications as well as personal requirements.
• Next, click on Search to display the latest available driver as per the information you entered.
• And click on Agree and Download to start downloading the latest driver executable file.
• Run the executable file after you finished downloading the latest driver executable file and then select Custom and click on Next.
• Afterward, select “Clean Install” and proceed. Doing so would install the latest driver on your PC.
• Restart your PC and check if the error’s now fixed. If not, you can try installing an older version of the driver instead.

If you connected your Hard Disk, USB, or SD card to your Windows 10 computer and you suddenly encounter an error that says, “Windows was unable to repair the drive”, read on as this post will help you fix the problem. This kind of error indicates that the file system on the drive has become corrupted and that ChkDsk was not able to repair the problem. You can also encounter this error when you try to run the ChkDsk utility to repair the system. This kind of error is most likely due to the general corruption of the contents in the drive. It is also possible that you removed the external drive without using the “Safely remove hardware” option or it could be that the drive is still in use. To fix the problem, the obvious thing to do is to safely remove the external drive by using the “Safely remove hardware” option. If it didn’t work, you can try to run the CHKDSK utility from the command line or you could also restart your computer in a Clean Boot State and then run the scan. Before you proceed with the potential fixes provided below, make sure that you create a system restore point first or you could also create a backup copy of the data to an external drive.

Option 1 – Run the CHKDSK utility from the command line

Although some users reported getting the “Windows was unable to repair the drive” when they run a CHKDSK scan, other users reported that running it also fixed the error. Thus, you can try to run it and see if it works or not.

• In the Windows Search box, type “command prompt” and from the search results, right-click on Command Prompt and select “Run as administrator”.
• After opening Command Prompt, type this command and tap Enter: chkdsk <Partition Letter>: /f
• The command you entered will start to check for errors and fix them automatically. Else, it will throw an error message saying, “Chkdsk cannot run because the volume is in use by another process. Would you like the schedule this volume to be checked the next time the system restarts? (Y/N)”.
• Tap the Y key to schedule Disk Check the next time your computer restarts.

Option 2 – Restart your computer in a Clean Boot State

There are some instances that some conflicting programs installed in your computer might be the one that triggers the “Windows was unable to repair the drive” error to appear when you connect your external drive or run the CHKDSK utility. 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.)
• Once your computer has restarted in a Clean Boot State, perform your scan again and see if it now works, and then start to isolate the problem by checking which one of the programs you installed recently is the root cause of the problem.

Windows Update Error 0x80071a91, what it is? As you know, Windows Updates are very essential to the operating system since they push with them the important security updates that are crucial to the system. And if a Windows Update is delayed, it can the system vulnerable to potential threats. Thus, this kind of issue must be resolved right away. One of the errors that you can encounter while updating your computer is the Windows Update Error 0x80071a91. The error code 0x80071a91 occurs when the “Transaction support within the specified file system resource manager is not started or was shut down due to an error”. This happens when a service called “File System Resource Manager” or FSRM does not function due to some reason. To fix the Windows Update Error 0x80071a91, here are some suggestions that could help.

Option 1 – Run the Windows Update Troubleshooter

Running the built-in Windows Update troubleshooter could also help you resolve the Windows Update Error 0x80071a91. To run it, go to Settings and then select Troubleshoot from the options. From there, click on Windows Update and then click the “Run the troubleshooter” button. After that, follow the next on-screen instructions and you should be good to go.

Option 2 – Disable the antivirus program temporarily

There are times when the antivirus program installed in your computer blocks file access and even disk access. Thus, disabling the antivirus program or any security software installed in your computer is always a good idea you can try when the Windows Update process does not go smoothly. So before you try updating your computer again, make sure to disable the antivirus or security program and once the Windows Update is done, don’t forget to enable the antivirus program back again.

Option 3 – Try resetting the File System Resource Manager

As pointed out earlier, the error 0x80071a91 pops up when the FSRM service suddenly stops working and so resetting this service via Command Prompt might resolve the problem. To do so, follow the steps below.

• In the Windows Search box, type “command prompt” and hit Enter.
• Then right-click on Command Prompt from the related search results and click the “Run as administrator” option.
• After opening Command Prompt as admin, type the following command and hit Enter:

resource setautoreset true C:

• After that, exit Command Prompt and restart your computer and then check if the problem’s fixed by running Windows Update again.

Option 4 – Flush the contents of the SoftwareDistribution folder

You have to stop a couple of services such as BITS, Cryptographic, MSI Installer, and Windows Update Services. And to do that, you need to flush the contents in the SoftwareDistribution folder. The Software Distribution folder in the Windows operating system is a folder that can be found in the Windows directory and is used to store files temporarily which might be required to install the Windows Update on your PC. Thus, it is required by the Windows Update and maintained by WUAgent. Aside from that, it also contains all the Windows Update History files and once you delete them, you will most likely lose the Update history. As a result, the next time you run the Windows Update, it may result in a longer detection time.

• Open the WinX Menu.
• From there, open Command Prompt as admin.
• Then type in the following command – don’t forget to hit Enter right after typing each one of them.

net stop wuauserv net start cryptSvc net start bits net start msiserver

• After entering these commands, it will stop the Windows Update Service, Background Intelligent Transfer Service (BITS), Cryptographic, and the MSI Installer
• Next, go to the C:/Windows/SoftwareDistribution folder and get rid of all the folders and files thereby tapping the Ctrl + A keys to select them all and then click on Delete. Note that if the files are in use, you won’t be able to delete them.
• Once all the contents in the Software Distribution folder are deleted, restart your PC and then go back to Command Prompt and input the following commands again.

net start wuauserv net start bits

Option 5 – Delete the Common Log File System transaction logs

You might also want to delete the Common Log File System or CLFS transaction logs to fix the Windows Update Error 0x80071a91.

• Open an elevated Command Prompt.
• Then type each of the commands listed below and press Enter after you type each one of them.
  • cd /d %SystemRoot%System32SMIStoreMachine
  • attrib -s -h *
  • del *.blf
  • del *.regtrans-ms
• After you’ve executed the commands given above, restart your computer and try to update Windows 10 again.

If you’re having some problem browsing multiple websites on the Firefox browser on your Windows 10 computer, then this post might be of help. One of the most common problems you could encounter in Firefox is mostly related to HTTPS and one of them is the MOZILLA PKIX ERROR MITM DETECTED or ERROR SELF SIGNED CERT or SEC ERROR UNKNOWN ISSUER error which means that Firefox was unable to trust certificates issued on secured websites. If you encounter the MOZILLA_PKIX_ERROR_MITM_DETECTED error in Firefox, this indicates that something in your network or system is interrupting your connection and injecting certificates and when that happens, Firefox won’t trust it. In such cases, one of the culprits is malware. Malware will try to replace a legitimate certificate with its certificate. Another cause is security software where it keeps a tab on a secure connection and creates a false positive, for instance:

“In Microsoft Windows accounts protected by Family Safety settings, secure connections on popular websites like Google, Facebook and YouTube might be intercepted and their certificates replaced by a certificate issued by Microsoft in order to filter and record search activity.”

And if you are connected to a corporate network, there might be a monitoring/filtering product that could be replacing certificates. Moreover, there are also users who reported getting this issue when they use the Nightly version of Firefox. And if that’s the case, you have to try accessing secure websites using only the stable build especially when it comes to payments. However, if you are not doing that, then here are some options you need to check out.

Option 1 – Try turning off HTTPS Scanning on your security and antivirus programs

Each security-based software has a security option that allows you to turn off the HTTPS scanning functionality. They may be available under different names such as HTTPS Scanning, Scan SSL, Show safe result, Do not scan encrypted connections, etc. Find what is applicable for your security or antivirus software and then try turning it off temporarily and see if it helps in fixing the MOZILLA_PKIX_ERROR_MITM_DETECTED error in Firefox.

Option 2 – Try to disable security.enterprise_roots.enabled

The next thing you can do if the first option didn’t work is to disable security.enterprise_roots.enabled which is an HTTPS certificate check on Firefox. Note that this is not recommended but you have to at least try in order to fix the error.

• Open Firefox and then type “about: config” in the Firefox address bar and hit Enter.
• After that, if an info message appears, confirm it.
• Next, search for the security.enterprise_roots.enabled preference and once you found it, double click on it.
• Then change its value to true and restart the Firefox browser once. This will import all the custom certificates from the other security software into Firefox. As a result, it will make sure to mark those sources as trusted and you won’t get the MOZILLA_PKIX_ERROR_MITM_DETECTED error.

Interesting information has come out from Microsoft, Windows 11 dark theme will include a different sound theme from its standard light one. When in dark mode on Windows 11, the system sounds generally become softer, and they echo a bit, creating a more soothing experience that matches the overall look and feel of the dark mode. Flipping back to light mode brings the system sounds back to their normal level. However, even though the light model has slightly louder sounds than the dark mode, Microsoft has taken great care to make sure the audio is more soothing, according to a report from CNBC. The designers of Windows 11 took inspiration from an approach called calm technology. Microsoft’s Christian Koehn and Diego Baca wrote about calm technology in a post on Medium. In it, they said, “Windows 11 facilitates this through foundational experiences that feel familiar, soften formerly intimidating UI, and increase emotional connection.” According to a Microsoft spokesperson in a statement to CNBC, “The new sounds have a much rounder wavelength, making them softer so that they can still alert/notify you, but without being overwhelming.”

If you got an error message saying, “Folder Redirection Failed, Failed to build the list of regular subfolders, Access is Denied” after you configured a new Group Policy Object or GPO which redirects User folders to a new network share or when you click on Reset default location under the Windows File Explorer or Folder Options, then you’ve come to the right place as this post will show you how to resolve this kind of error on your Windows 10 computer. Follow the given options below carefully to fix the “Folder Redirection Failed” error.

Option 1 – Take Ownership of the folder

If you are not able to access the folder could be one of the reasons why you’re getting the “Folder Redirection Failed” error and so you need to take ownership of the folder to resolve the problem. Before you proceed, make sure that your account is an admin account.

• First, locate the concerned folder and right-click on it then select Properties.
• Next, click on the Edit button in the Properties window and click OK to confirm if you got a User Account Control elevation request.
• After that, select user/group from the permission windows or click on the Add button to add another user or group. It would be best if you add “Everyone” to give permission.
• Then check “Full Control” under the “Allow” column to assign full access rights control permissions.
• Now edit the permission to Full Control for “Everyone”.
• Click OK to save the changes made and then exit.

Option 2 – Try to add Authenticated Users or Domain Computers

Make sure that the Folder Redirection group policy removal option is set to “Redirect the folder back to the user profile location when the policy is removed” when using the Folder Redirection. After that, you have to add Authenticated Users group with the “Read” permissions on the Group Policy Objects or GPOs. And if the Domain computers are part of the group of “Authenticated Users”. Note that by default, the “Authenticated Users” have these permissions on any new Group Policy Objects or GPOs. Once again, you have to add just “Read” permissions and not “Apply Group Policy” for “Authenticated Users”. Furthermore, to fix the “Failed to build the list of regular subfolders” errors, here are some options that could help.

Option a – Try to clear disk space

You might have to check if your disk is running out of space because if it is, then it will fail to create a list abruptly. And so you need to free up some disk space. You can either check on the files manually especially if you tend to keep your files at random places in your disk drive.

Option b – Find the Target route

You need to find the target route of the folder and then restore it if you are getting the “Failed to build the list of regular subdirectories” when you try to relocate the folder to the original location.

Option c – Try to change Ownership/Reset Defaults for all the User folders

If the “Failed to build the list of regular subdirectories” error pops up when you are trying to move a large number of files from one location to another, then you need to change the ownership of the folders as pointed out earlier.

Hello and welcome to another problem-solving tutorial on errortools.com. Today we will be solving error 0x80070057, we could not format the selected partition which occurs during setup and installation when performing a clean install of Windows from a USB drive. So, you have backed up your files and decided to format and do clean WIndows installation, you have your USB ready, you reboot the system, plug in USB, start Windows setup, choose the hard drive on which you want to do a clean install and then this happens. This error is very frustrating and it annoys pretty much anyone who encountered it but do not worry we have a solution for you. First thing is to confirm the error prompt, Click on the OK button and then on X to exit Windows 10 installation wizard. Click on yes to confirm that you want to exit the setup. You will find yourself in original installation windows. On that screen choose and click on Repair your computer. Choose an option screen that will pop up, click on Troubleshoot. In the advanced options, click on the command prompt. Once you are in command prompts type DISKPART and hit ENTER In the diskpart prompt type LIST DISK and hit ENTER again. type SELECT DISK #, where # is listed disk number where you would like to install Windows. type LIST VOLUME in order to list volumes in the selected disk and hit ENTER You need to select the volume on which you would like to place your WINDOWS, to do this type in SELECT VOLUME #, where # is the listed number of the volume Finally, type FORMAT FS=NTFS and hit ENTER You have successfully formated a given volume, you can now exit DISKPART and return to setup, to exit DISKPART simply type exit and hit ENTER. Leave command prompt as well by again typing exit and hitting ENTER You will be returned to Choose an option screen, click on Turn off your PC. Your drive has been successfully formatted and it is ready for clean Windows installation, you can now restart your Windows 10 installation and the process will complete without errors.

Browsing the internet doesn’t always go smoothly, you might encounter ads, pop-ups, viruses, malware, and even errors. In this post, we’ll walk you through how you can fix the 502 Bad Gateway error that you might encounter in browsing the internet. This kind of error suggests the server which is the one that’s acting as a gateway to facilitate in taking your request to the server and bring some response back has received an invalid response or even no response at all. It could be that the connection is broken or that there is an issue on the server-side that returns an invalid response. Even though the 502 Bad Gateway error is a server-related error, there are still a few things you can try that might help resolve it, if tapping the Ctrl + F5 keys does not resolve the problem. Keep in mind that it doesn’t matter what website you open as this error can appear on any website. To resolve the problem, you need to follow the options prepared below.

Option 1 – Check the network cable connections and restart your router

As with other connection problems, this is the most basic thing to do before you try other troubleshooting options because the root cause of the problem might be as simple as a cable not connected properly or a router that just needs to be restarted. Thus, checking the network cable connection to see if there is anything out of order can help as well as restarting your router.

Option 2 – Reset Winsock, TCP/IP & Flush DNS

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

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

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

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

Option 3 – Change the DNS

Changing the DNS server for your network can also help you fix the 502 Bad Gateway error. You can use a public DNS like the Google Public DNS, Open DNS, Yandex DNS, Comodo Secure DNS, and many more. All you have to do is to override the default DNS settings on your PC so that you can specify which DNS server is used as well as which IP address should be used for a specific domain.

Option 4 – Try updating the Network Adapter Driver

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 “devmgmt.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.

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.

Option 5 – Try a Network Reset

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

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

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