Hey @HighSaint
Among others, @TheJammie is probably also referring to his other thread where we tried these and other steps to try and fix this but it seems to be a fairly unique case.
I wondered whether their game license may be revoked since nothing else seemed to work so I asked if they could try the same account on a different computer just to test it.
@TheJammie If your steam account works with Conan Exiles on another computer, and other accounts work on your computer also, and your account on this computer is the only combination that doesn’t work, then it might be some very niche steam setting in the app itself preventing games establishing online connections (some form of forced offline mode? like the Steam → Go offline option)
or some form of erroneous cached data of steam specifically on that computer.
Check all the settings pertaining to offline modes, if you cannot find anything then I think you should try completely uninstalling Steam itself and reinstalling it - making sure to delete any of it’s leftover folders in the process. Keep in mind that some of your games might have single player offline saves stored in the Steam folders so you might wish to backup some of those.
Edit: I went through the steam settings quickly, the main Steam → Go offline and this one are the only two I found that have some small chance of interfering here
This second one should only affect coop in theory, but you never know. Try toggling offline mode back and forth first just to make sure it is indeed disabled and then check these settings