If you ran a System Restore on your computer and continuously receive this error message when trying to launch World of Warcraft, follow the steps to resolve the problem.
- With World of Warcraft selected on the Blizzard Battle.net desktop app, click and select Show in Explorer.
- Open the World of Warcraft folder.
- Open the _retail_ folder.
- Delete Wow.exe and Wow.exe, then close the Blizzard Battle.net desktop app.
- Download the World of Warcraft installer and run it to create new versions of your game files.