[Martin Kornell]

maybe the issue is that its on the C drive even though its in the program files folder, if you have any other drive you can try and move it?
if this doesnt work: https://windowsreport.com/exception-acce...indows-10/
maybe try and move the install folder: right click on the game in steam, properties->local files->move install folder

Thanks for your fast reply.
I'm just setting up my new machine and haven't prepared the second drive yet (also I hope for another solution to keep all games at one space  ).
Unfortunately the Solutions mentioned by your link didn't work - running as admin, deactivating AntiVirus <- It's always the same reaction