Windows update broken

[Trapulo]

Hi,

I've a Win2012 running from some years that suddenly has broken Windows update. It cannot update, nor complete a Windows update scan. The update process also consumes ALL the CPU during scan.

The windowsupdate log reports

CltUI FATAL: CNetworkCostChangeHandler::RegisterForCostChangeNotifications: CoCreateInstance failed with error 80004002 windows 2012

Tried to clear the windows update local folder, and to run WindowsUpdate.diagcab. This reports some error fixed any time I run it! I run it, it reports has fixed something, I run it again, it reports an other time the same.

Tried also:

C:\Windows\system32>DISM.exe /Online /Cleanup-image /Restorehealth

Deployment Image Servicing and Management tool
Version: 6.2.9200.16384

Image Version: 6.2.9200.16384

[==========================100.0%==========================]
The restore operation completed successfully. The component store corruption was
repaired.
The operation completed successfully.

and sfc /scannow, still nothing.

This is really an hell: this is a production server!

any idea?

thanks

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