[THEBERBSTER]

Hi Fifi

it’s not a new one (i bought a used one)

AFAIK you cannot use second hand discs?
Why, because the original disc which you have is linked to Uplay by the original owner:
Email address
Login
Password.
As soon as you go to enter the CD key it does not recognize you as the owner.
You can buy a new CD key and it quite cheap.
Google this link https://www.google.com/search?q=new+...ient=firefox-b
Or alternatively search > New cd key for Silent Hunter 5
Any download other than STEAM you should be able to install outside of your STEAM account.
Using a registry cleaner will tidy up the registry for you, the only other things to do is to make sure there is nothing on your system relating to SH5 and then re-boot your system before any new/re-installing.

When you uninstalled your STEAM version did you also check your control panels program and features and make sure the Uplay Game Launcher is uninstalled.

You do not want your game running in the Program Files (x86) directory as it has restrictions.
I also advise downloading the game launcher from here.
Post #97 SH5 Game Launcher Install It Anywhere On Any Drive
Peter