Hello Yannic
Please ensure that .net framework 3.5 is installed and activated.
You can check in windows features:
Not that this might justify or explain your issue, but I would always use latest AS Version, so 4.12.9.
Further please also check with your IT, if eventually your Antivirus blocks/deletes or puts some files eventually in quarantine.
Which Windows Version are you using, and is it plain windows or a VM?
Lg Michael