Windows 10: Need Immediate Guidance. Windows 20H2 activation failed since the upgrade

I have a activated version of windows and is tied to my hardware. I am have an insider version of windows and I recently updated from 1903 to 20H2 and after the update the windows is asking me to activate the version of windows. I then noticed that my product Id changed with just an update that was available to me on its own. How do I get it fixed? I tried troubleshoot in the activation tab in settings and every time I troubleshoot it fails 0x8007005 and changes my product id again.

Rewriting the Important points:

1. Had an activated windows 10 at 1903
2. No hardware changes were made
3. Updated through the official update feature in the setting menu
4. Windows activation product key is linked to my hardware
5. Belongs to the Windows Insider Edition
6. Product ID changes every time I run the troubleshoot
7. Never interrupted the update process.

Please, tell me how to fix the issue and reactivate my windows.

:)

 

Windows 10 fails to update


When you finish testing the Avast suggestion, make sure that you restart your machine.

Then if the issue persists, please return to the trouble shooting list in post# 89

I think there are three steps that remain; the WU troubleshooter, reset WU components, and manual WU reset.

 

Trouble upgrading 20H2 with windows update

Try this > TechBench by WZT (v4.1.1), and do a clean install.
It work for me.

 

Upgrade to 20H2 failed

The laptop was offered the feature upgrade to Win 10 20H2. It is still running 1903. It had failed 1909, 2004 with this error 0x80004005 - 0x1000A,The installation failed in the DOWNLEVEL phase with an error during PREPARE_FIRST_BOOT operation.

Since Microsoft does not like this laptop anymore I had done a chkdsk, a SFC / scannow and a disk error check from the properties tab. All errors fixed.

I stopped MS secutity, firewall and the Avast security for the upgrade.

Downloading and installing took some time and it looked as if the laptop was going through the motions. At the end it had just reverted to 1903 again.

What else can I do short of a complete reset?