My base game was purchased from Steam.
Morrowind is purchased from Steam.
I've been playing the game without problem until Morrowind.
My account page shows Steam account linked.
Build shown in the properties for TESO in my Steam library is above the cutoff number for needing reinstall.
I launch the game from the TESO page in my game library of Steam and go through the usual patcher and update check, then on to the Morrowind login. It goes to automatic login (no input from me) and no option provided for otherwise. Login fails with message from the title of this thread.
I have gone through the help sections here and have followed all directions, including the renaming of ProgramData folder in Launch folder. No joy.
I do not have the option to stop the auto login on the Morrowind page when trying to log into the game.
If at first you don't succeed, LFG.