
If this keeps happening after the reboot, open the Launcher and go into its settings page, there click on " Application Data" (bottom-right corner) and in the " save folder" find and delete the file " preferences.json" then close the Launcher and restart the PC.

If you do not remember where you installed Diablo2 LoD you can check its installation path by 'right-clicking' on Diablo2 LoD original shortcut, then selecting " Properties" and in the " Shortcut" tab read the path written in " Target:", the needed path should ends with the folder " Diablo II". You can check the Median XL's installation path in the setting page of the Launcher, to access click on the cog " ⚙️" icon (up-right) in the Launcher window.


Also make sure the installation path for Median XL ( not the Launcher's one) matches with the installation path of Diablo2+LoD.
