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I agree with you about the problem could be registry problem. Just like error problems when doing windows 10 updates from time to time. Did you do a sfc scan  tool at windows command prompt?  Instructions below.

Scan System Files

The system files can also be scanned and repaired from the Command Prompt.
Right click on the Command Prompt, and chose "Run as Adminstrator"
Type (make sure you push space after typing sfc) “sfc /scannow” and press enter, the scan will start and may take quite some time depending on your PC speed (up to an hour may be). It will either automatically repair the files or let you know if there is a problem and provide its details. If it finds problems and fix's them reboot the computer if no problem just type exit or close out the command prompt.

System files corrupted might also cause this problem. Sometimes running  the sfc command a few times will fix corrupted system files. If not you might have to use the DISM tool. How to use DISM command tool to repair Windows 10 image

On Windows 10, the Deployment Image Servicing and Management (DISM) is a tool designed for administrators to prepare, modify, and repair system images, including the Windows Recovery Environment, Windows Setup, and Windows PE. However, you can also use the tool with Command Prompt to fix common problems with the hidden recovery image on your device.

However, if the replacement files inside the Windows 10 image are damaged in any way, the SFC command won't work. In this particular situation, you can use DISM to scan and repair the "install.wim" image, which you can then use with SFC to repair your installation.

Warning: Although these are non-destructive commands, you'll be making system changes. This means that it's recommended to create a temporary full backup before proceeding.

To check for issues within the image with DISM, use these steps:

Open Start.
Search for Command Prompt, right-click the top result, and select the Run as administrator option.
Type the following command to perform a quick health check and press Enter:

DISM /Online /Cleanup-Image /CheckHealth

Once you complete the steps, the command will run and verify if there is any data corruption that needs fixing.

Checking issues with DISM using ScanHealth option
Alternatively, you can run DISM with the ScanHealth option to perform a more advanced scan to check if the Windows 10 image has any problems.

To perform an advanced scan with DISM, use these steps:

Open Start.
Search for Command Prompt, right-click the top result, and select the Run as administrator option.
Type the following command to perform an advanced DISM scan and press Enter:

DISM /Online /Cleanup-Image /ScanHealth

After you complete the steps, the advanced scan will take several minutes to determine if the local image needs repairing.

Repairing issues with DISM using RestoreHealth option
If there are issues, then you can use DISM with the RestoreHealth option, which will run an advanced scan and repair any problems automatically.

Open Start.
Search for Command Prompt, right-click the top result, and select the Run as administrator option.
Type the following command and press Enter:

DISM /Online /Cleanup-Image /RestoreHealth

Quick note: While the command is running is normal to see the process stuck at 20 or 40 percent, after a few minutes, the process will complete successfully.

Once you complete the steps, the Deployment Image Servicing and Management tool will connect to the Windows Update servers to download and replace any damaged files in the local image for Windows 10 as necessary.

If that does not fix your DISM image there is a much more detailed instructions to fix it, from Microsoft.

Hope this helps