https://bugs.winehq.org/show_bug.cgi?id=48141
--- Comment #1 from felix.huber@schyf.de --- It seems like commit 599deed91cc6a91fa83072ac21d8516a4647e174 ntdll: Fix counting of environment strings. fixed most of the issue. Launching an association works again.
I still see the messages wine: Read access denied for device L"\??\Z:\", FS volume label and serial are not available. whenever a drive is mapped to a root directory. I don't know if this intentional or just a side effect.
I would considere the issue as sovled.