After that, you can launch the game to test the issue. Just delete the mods subfolder within the Witcher 3 folder and it should work. Witcher 3 may have been worked fine with the mods before, but mods can be unpredictable at times. If you have added any mods to Witcher 3, you can uninstall them to see if it works. Relaunch it to see if your Witcher 3 not launching issue still persists. Now you have full access to the game files.

Run Steam/GOG as Administratorġ) Right-click your Steam/GOG, and select Properties.Ģ) Select the Compatibility tab, and tick the Run this program as an administrator box. To fix it, you can try running both of your Steam/GOG and Witcher 3 as administrators. Witcher 3 sometimes can’t access certain game files on your PC under normal user mode, which could be the cause of the not launching issue. Here is a list of methods that have helped many other players to solve their Witcher 3 not launching issue. You’re definitely not alone and many players have solved the Witcher 3 not launching issue with the fixes below. When you’re entering this complicated fantasy world, nothing upsets you more than getting a not launching problem. In Witcher 3, you can just enjoy the free-roaming exploration, slaying monsters, making difficult moral choices, and never get tired of it.