I have bought and tried to play this game just now but this notice pops up and makes single player campaign unplayable. Every time I tried to start a new campaign, the game "freezes" for a while and then produces the notice. Sometimes I can see the place to enter commander name, but it always lost connection before I can finish typing.
All other forums say one should consult DoW official technical help.
I have tried suggestions in this thread: http://community.dawnofwar.com/discussion/334/sign-in-change-has-occured-last-stand-problem
Except for upgrading to Windows 10.
It does not help.
Is there any fix to this problem? As long as I can see, it has been quite common with the DoW 2 steam version.