Cant Install Windows update telling as "Install error - 0x800f0983". what is the remedy as already diagnosed it with self built windows diagnostics.

Hello. Error 0x800f0983 usually points to a problem with the Windows Update cache or damaged system files.

Please, follow these steps:

1. Open PowerShell as Administrator (right-click Start > Windows PowerShell or Terminal > Run as administrator).
2. Stop the update services and clear the update cache by running these commands one by one:

net stop wuauserv
net stop bits
Rename-Item C:\Windows\SoftwareDistribution SoftwareDistribution.old
Rename-Item C:\Windows\System32\catroot2 catroot2.old
net start wuauserv
net start bits

After that, restart your PC and check for updates again.

If the problem continues, you can also try the official Windows Update Troubleshooter here: https://support.microsoft.com/help/4027322

And a step-by-step reset guide is here: https://learn.microsoft.com/windows/deployment/update/windows-update-resources

Let me know if the update still fails after this.