Account Mismatch Error

[zevnda]

Update

For those of you who had to switch off the Client Beta Participation yesterday, you should be able to enable it again with no issues.

https://store.steampowered.com/news/group/4397053/view/605276452911318951?l=english

Fixed regression in yesterday's Beta Client which could cause some Steamworks enabled games to fail to initialize.

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If you are suddenly getting an Account Mismatch error in SGI, even though you're logged in to the same account on Steam and in SGI, the likely culprit is that you've opted into the Client Beta Participation.

You can opt out of the beta by going to Steam Client > Steam > Settings > Interface and setting Client Beta Participation to No beta chosen, then restart Steam.

Thank you to @AKaravas for reporting this issue #131