Yes, DON'T use special characters for Windows User Account names.
Next, move the game's installation directory to a folder of your own creation located on the root of your drive. Do not install games to Program Files or Program Files(x86). These are protected directories under Windows and have been causing issues with games for years.
Lastly, be sure you are running under an Administrator Account with ELEVATED access. Windows loves to remove basic functionality from its users in a Big Brother attempt to offer "safety and security". It's just intrusive and counter-productive. If you intend to play games without issues, http://www.tweakandtrick.com/2014/07/enable-administrator-windows.html.
Worst-case scenario is re-installing once you've followed the above steps. Shouldn't be necessary, though. Just make the changes and restart your computer. That should do it.