I tried to use it right after launch from within Claude Desktop, on a Mac VM running within UTM, and got cryptoc messages about Apple virtualization framework.

That made me realize it wants to also run a Apple virtualization VM but can’t since it’s inside one already - imo the error messaging here could be better, or considering that it already is in a VM, it could perhaps bypass the vm altogether. Because right now I still never got to try cowork because of this error.