Unable to install July 2021 rollup patches on Windows 2012 R2 KB5004285 and KB5004298

I am having trouble installing the recent July rollup updates KB5004298 and KB5004285. Updates install fine but after reboot it rolls back.

https://docs.microsoft.com/en-us/answers/questions/478073/unable-to-install-july-2021-rollup-patches-on-wind.html#answer-484760

Any help would be much appreciated.