I had the same problem, but - like MalicStorm wrote - the solution is apparently given here (I.e. deleting the plugin manually and reinstalling it from GOG app):
Worked for me (my guess would be they changed something on Steam, and the plugin version we all used silently became incompatible with those changes, and perhaps adjusted afterwards; some sort of notifications would be appreciated, of course, but since it's no official integration, nobody feels like adding it, I suppose...).
+1 to this.
You can delete the steam plugin by deleting its folder from
I did it after disconnecting Steam from the integrations menu and shutting down GOG Galaxy but not sure if mandatory.
Then, relaunch GOG Galaxy, go to integrations and connect for Steam. It'll auto download the client. GOG Galaxy integration documentation
GOG is a blessing to gaming. One of the last beacons of light out there. Actually doing things for their clients rather than conjuring more ways to screw us over.
I've been having this problem for weeks, and this solution worked. I can confirm that you need to disconnect the Steam plugin and shut down GOG Galaxy before deleting the folder (tried it without doing that and it didn't work).
So, to reiterate:
- disconnect the Steam integration plugin
- close the Galaxy client
- delete the folder mentioned by LordChen
- restart Galaxy
- connect the Steam integration plugin
- voilà, problem solved.
Oh, and I can also confirm your last paragraph. GOG is really one of the best things to happen in gaming since forever. They make some mistakes along the way, but there's no ignoring their core philosophy of always trying to do right by us, the customers. Here's hoping that philosophy never changes. And they're not even paying me to say any of that! :D