https://bugs.winehq.org/show_bug.cgi?id=45814
Olivier F. R. Dierick o.dierick@piezo-forte.be changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |o.dierick@piezo-forte.be
--- Comment #2 from Olivier F. R. Dierick o.dierick@piezo-forte.be --- There is a lot of people complaining on the blizzard forums [1], so yes, this happens in Windows too, and the suggested workaround for Windows users is to kill every blizzard processes (agent.exe *, battle.net *, games), and then delete C:\ProgramData\Battle.net and, then re-detect all games.
The link in the error message itself also suggest that it occurs in Windows and hints at deleting the aforementioned directory.
Seems to be an upstream bug but it may get triggered by Wine for specific reasons, so I can't confirm whether it's an upstream bug or not.
[1] Search "Blizzard agent went to sleep" in your favorite search engine.