Microsoft: KB5021233 causes blue screens with 0xc000021a errors

If no errors are detected, but the BSOD error continues to occur, you’ll need to investigate other problem fixes. If that’s the case, you can use MemTest86 to perform an in-depth memory test. This troubleshooting guide applies to any version of Windows, including Windows 11, Windows 10, Windows 8, Windows 7, Windows Vista, and Windows XP. If you are dealing with a compatibility problem, you will probably experience a Blue Screen of Death randomly or upon launching the app.

Now that you have a restore point, here’s how to download and install the missing DLL files manually. Installing a DLL file manually requires using a DLL downloader website to get the file, then moving the files to the correct location. Note that the files obtained from untrustworthy sources may be loaded with malware, or you could accidentally download an incompatible version. So, please create a restore point first as a safety measure. If you’re a beginner, use the Microsoft Safety Scanner for malware scans. But if you want a more robust option, check our list of the best Windows antivirus programs for more details. When trying to clean up space on a hard disk or uninstalling/installing a program, a single DLL file may be deleted mistakenly.

These range from harmless ‘VIDEO_TDR_TIMEOUT_DETECTED’ to more pressing issues like ‘CRITICAL_PROCESS_DIED’. Unfortunately, this can result in the loss of unsaved data. Her articles mainly focus on data backup and recovery, disk cloning, and file syncing, committed to resolving the data loss issues users may encounter on their PCs. In her leisure time, she enjoys reading and watching movies. Repair disk drive in Windows and recover deleted/lost data from corrupted, formatted, inaccessible hard drives. Sometimes, pending Windows 10 updates cause the problem you see with memory management.

windows 10 can't update

WinDbg also called as Windows debugging tool is a multipurpose debugger that automatically scans all the minidump files which were created after the BSOD crash. The tool is used for more advanced analysis for a tricky error and is available to download for free as part of the Windows 10 SDK. In this article, we explain how to use the Windows debugging tool (WinDbg) to read the crash report.

Step 3: Install Windows Updates

I prefer to change the double-click action to “Edit” so that accidental mergers do not happen. REG files d3d11.dll was not found do not replace keys but add to them, something to keep in mind. Some experienced PC users prefer to do any actual editing in the exported REG file and then to merge the edited file. This prevents accidentally doing something to the wrong key.

  • If you find that there are is a certain key that you modify often, this key can be added to the “Favorites’ list for easy access.
  • For non-IT professionals or non-developers, I recommend Nir Sofer’s excellent BlueScreenView utility instead.
  • Using a trusted PC optimization tool will help tidy things up, without the risk that comes with trying to edit the registry yourself.
  • You can also backup registry entries and restore if something goes wrong.

So, check that service, and others needed for updates, are enabled and running when update errors occur. After the computer restarts, you’ll need to manually download and install two updates for Windows 7. You’ll need to check whether you’re running a 32-bit version of Windows or a 64-bit version and download the appropriate updates for your PC.

Software and hardware companies can also release buggy updates that cause problems like BSoD on Windows 10. If there’s an update available, but it does not download, try to download and install the missing quality update manually. Typically, when an error occurs, the setup will revert the changes to the previous installation without an explanation. Windows Update failing errors can be frustrating, but there are several methods to fix the issue. Keep in mind — the list above doesn’t contain all possible causes.

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