Error 37 - The server is full. This is likely due to high login traffic. The only solution is to keep trying to log in.
Do we really live in an age where it’s acceptable to have such unintelligable, non-human readable error messages? Why even report this to the user as “Error 37” - the user should be told plainly and clearly, in their configured system language, that the servers are full.
And don’t even get me started on the root cause - the fact that Blizzard underestimated the demand for a game that had 2 million preorders, and forces every single player to be online regardless of their intention when they get the game up and running.
Maybe a DRM-free alternative is in order…