Created attachment 12827 [details] STATUS_INVALID_PARAMETER error. Attached wireshark trace gives a STATUS_INVALID_PARAMETER when running smbclient -c 'cd <dir>;ls' as a standalone program. This is a customer issue. We cannot recreate this issue so we're looking for why this may be happening. From the trace you'll see multiple sessions with smbclient, but the last one is the offending one.