I have a ticket open for almost two weeks now with the same issue - the 0xc0000005 error and no launcher start on a VM install.
But i did get it to work with the instructions in this post:
Basically uninstall the launcher and reinstall from an old launcher binary. Then let it download the launcher update, but cancel the installation of that update. Then it works.
Still, I am hoping a permanent fix comes along soon…