I, for some odd reason, was able to get connection back on my laptop by opening the spotify app I have on myiPhone while spotify was also running on my laptop. As soon as the app opened, spotify connected on my laptop (and immediately showed an ad haha) Hope this helps someone
I just had the same issue also. Suddenly, Spotify stopped playing and a blue notification in the right lower corner said I was offline, though I was still online. I quit the program several times, to no avail. Suddenly, it just started to work again. I suppose Spotify´s servers were down or something.
Nope, I wasn't using Facebook to log in with, it had it's own Spotify password, it doesn't work on any devices connected to that internet connection. Error 4 same as a lot of people. But not a facebook password issue in this case. Any other ideas?