If you find Stp-se4dx11.exe in C:\Windows\System32 or C:\Windows\SysWOW64 , this is highly unusual and should be treated as suspicious, as legitimate versions rarely reside in core system folders.
: Check your antivirus history. If the file is missing or blocked, you may need to restore it and add the game folder to your exclusion list Administrator Privileges : Right-click the file and select "Run as Administrator" Stp-se4dx11.exe