Upon updating your Warcraft 3, the following error message is displayed: "Registry error loading key Warcraft III\InstallPath". In this article, we'll talk you through the solution to this problem.
As the message indicates, the "InstallPath" (installation path) registry key can't be found. First of all you need to follow these steps:
Note: If the keys listed below do not exist, you must create them by:
Set the path to Warcraft III.exe: C:\Program Files\Warcraft III\Warcraft III.exe.
If you have installed The Frozen Throne, you must change the ProgramX key by putting the path to Frozen Throne.exe: C:\Program Files\Warcraft III\Frozen Throne.exe.
HKEY_CURRENT_USER\Software\Blizzard Entertainment\Warcraft III should look like this (with Frozen throne installed):
Image © Wallpaperset.com