Last night I launched Classic in windowed mode via the run command:
C:\Program Files (x86)\World of Warcraft\_classic_\wow.exe -windowed
Today I launched Classic through the launcher (with no command line arguments configured in the game settings of the launcher) and it still launched in windowed mode.
So I tried to launch it through the run command without the windowed flag. It still launched in windowed mode.
When I try to select Windowed (fullscreen) from the in-game settings I get an error message that says World of Warcraft could not start 3d acceleration.
Any ideas?
I’m going to check on graphic driver updates just in case.
Edit: Updating the graphics driver allowed me to change the in-game settings to Windowed (fullscreen) without the game crashing. It now launches fullscreen.