The only issue we have seen with that is when the game is installed to a directory that uses non-ASCII characters.

For example: C:\Новая папка\GalacticCivilizations3\...

Can you please check your install directory and see if that might be the issue.

Hi, I have the same issue and still didn't find any solution. So far I checked every google link I could get and no solution as of yet. I also checked the suggestion from DerekPaxton also no problems on that. I found in the Debug.err file lots of entries as follows; hope thats helps. Command Line: -AUTH_LOGIN=unused -AUTH_PASSWORD=Deducted -AUTH_TYPE=exchangecode -epicapp=Deducted -epicenv=Prod -EpicPortal -epicusername=Deducted -epicuserid=Deducted -epiclocale=en Edit; I found the solution I think please open the mentioned debug.err file with notepad and remove the lines which looks similar to what I have mentioned. Afterward the game should start.