Personally I do not install Ubisoft in C progam files..blabla... I create a folder on the disk where I have the game example "D:\Ubisoft\Ubisoft Game Launcher"
install games "D:\Sh5\Silent Hunter 5" of course give the correct path in your Ubisoft launcher during the installation of the game..
install clean you will be sure of the final result don't forget to clean all traces of the previous installation 'CCleaner' your friend possibly...
uais: