I had to restart my laptop about 30min ago. Guess what, the updates which refused to install with error 0x80073712 at every reboot since weeks did install successfully now. So whatever you did it worked :thumbsup2:
Nevertheless I ran SURT just now and attached the log. There are still lots of errors mentioned in the log, but they don't stop me from updating anymore. So I leave it up to you. Do you think it makes sense to continue and tackle the remaining errors?