Okay the error was that the sql user, used for connecting SSRS and SQL database, was configured but not user mapped to the master and msdb

I ran this command

USE master

...

Thanks - but I followed the article already.

I have opened a case with MS, so Ill keep this thread updated when I have any news

Hi Roy

Thanks for your answer

I was more looking for a script that could detach the databases, as we have 100+ databases we want to move. Manual work would take forever...

Its case sensitive. Use REINSTALL=SQL_Engine instead 🙂

Thanks for both of your suggestions. I did run some diagnostics on my server, and backup last night.

My backup is always in nonpeak hours at night, so user load shouldnt...