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Update of Windows Server 2019 fails with 0x800f0986

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This is a follow up to What exactly means MS error code 0x800f0986?

I use Windows Server 2019 Standard, Version 1809, Build 1339.

I am not able to perform any weekly updates as it fails with 0x800f0986, both Online Update and WSUS fail.

When running sfc /scannow it complains about corrupted files which cannot be repaired.

Running dism /online /cleanup-image /restorehealth also fails. Running dism /online /cleanup-image /restorehealth /Source:WIM:D:\sources\Install.wim:2 /limitaccess by using a Windows Server 2019 Evaluation installer doesn't succeed either.

Finally, I tried to perform an inplace reinstall with a Windows Server 2019 Evaluation installer. But I cannot check the option to keep all files and apps as it complains that the installer contains a different version of the one installed ... which is not true as I have the Desktop Version installed and checked the Windows Server 2019 Desktop Version in the installer.

So, is there anything else I can do ...?

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