GTA IV installation in Windows 8. Your system is incompatible with %P

If you try to install GTA IV on Windows 8 or 8.1 you will most probably get into this error:

Your system is incompatible with %P

Please follow the link bellow for more information.

GTA IV incompatible

To clear this error, you need to run the setup.exe file in Windows XP Service Pack 3 compatibility mode. For that:

1. Open your drive (DVD 1) and ope GTAIV folder. Right click on setup.exe file and choose Properties

GTA IV incompatible 2

2. Go to Compatibility Tab and check “Run this program in compatibility mode for:” From the drop list choose Windows XP Service Pack 3.

GTA IV incompatible 3

Run Setup.exe again and Enjoy!


  1. It’s not working. already done this before when I start the setup file it’s won’t display anything and neither start setup. if you have any solution please tell me.

  2. It’s not working for me either. :( I tried every compatibility mode, however.