Quake 4 – Fatal Error: Could Not Create Destination File

If you get an error message similar to this one when trying to run Quake 4…

Fatal Error: could not create destination file C:/Program Files (x86)/id Software/Quake 4 Multiplayer Demo/q4mp/gamex86.dll

…then you should run the exe as Administrator.

So Right-click, “Run as Administrator” and all will be sorted.