I just wanted to update games and steam itself in one computer while playing on another.
Removing or making the restriction by "os" or by "current game being played" would be a great step forward.
Closing as this no longer applies since in-home streaming was added to the Steam client.
Nothing extracted yet.
Problem
Logging in to the Linux client logs out the Windows client and vice versa with the message
Suggestion
I argue that multiple simultaneous logins should be allowed because