Latest Crossover / MacOS / Battle.Net / Diablo II Resurrected not working together.

If you want to play games, then a Mac is not the best choice of computer to do so. The majority of games are made for Windows and only hacks allow them to possibly run on other systems. If Blizzard cared, then they would make a fully supported Mac version.

It is bad enough you want to run a Windows game on a Mac, but an M-series Mac on top of that. An M-series Mac adds so much more difficulty to running such a game because it requires even more hacks than it does for an Intel Mac. You now have to worry about Rosetta2 and also need an extra hack to deal with the M-series GPU which may allow some games to work, but I understand graphical performance will not be that great for many games.

FYI, in a few years it is expected that Rosetta2 will no longer be available with later major versions of macOS, so the whole Windows gaming on an M-series Mac will no longer be an issue since it won't be possible to do so.

If you want to run Diablo, then play it on a Windows PC or on a game console where it is fully supported by Blizzard. Otherwise you will be trying to fix game issues whenever Blizzard, macOS, or even Codeweavers update their software.

It is up to those third-party vendors to fix the problem.

Contact a third-party vendor - Apple Support

It’s a bug in Rosetta2.