@jakobstockman - We observed the same behaviour: forcing SMB2 on the
client side sometimes works but sometimes produces the described
authentication issue. (We're on Server 2012r2 for the domain controller
and file servers.) We found you can fix the ...
@jakobstockman - we had the same issue: the protocol_vers_map=2
workaround was effective for some users but not others. Got exactly the
same authentication failure you did, once set. Having removed the
affected macs from the domain and readded them (...
