Hi,
Thanks for the reply.
I feel a bit silly now for not expanding on by what I meant by when I said I tried installing manually.
I have tried manually installing by directly clicking on the MSU (The install reports the error: "The update is not applicable to your computer")
I have also tried to manually install by extracting the cab and using DISM.exe /online method. (the error is: "Error: 0x800f081e The specified package is not applicable to this image.")
I've tried both the original 2021-11 release and the updated KB you list in the DISM command above. (kb5008602). Both KB's fail in the same manner in both DISM and the double clicking the MSU.
Regards,
David