1809 upgrade to 21H1 failed with error 0x80240034

Question

Hello,

We are using wsus to upgrade our client to 21H1 and all client with 1809 have error 0x80240034 while attempting to install 21h1f feature update.
I don't know why but at first SSU package kb5005112 was missing in our wsus so we had to import it manually. Now the kb is available and approuved but state is non applicable for 1809 client and we still have the same error ?

regards

Answer 1

It might be due to damage in the system file, just for test try open Command prompt as administrator and then type the following command:

sfc /scannow

Press enter and let it runs.

Answer 2

Hello

I tried the sfc /scannow but no corrupted files were detected, problem is still the same.