Hi, L Walsh <cifs@xxxxxxxxx> writes: > Unix extensions worked long before SMB3.x. It seems there is ongoing work > to disable SMB2.1 support and replace it with only latest SMB from MS > compatible with Win10. * UNIX extension are smb1 only and are only implemented by the Samba server (not windows). * POSIX extensions are for smb2+ and are still experimental. The fact that serverino gets disabled looks like a bug. As Steve said, the problem seems to be related to ACL. You should open a bug and provide dmesg and network capture as documented here: https://wiki.samba.org/index.php/Bug_Reporting#cifs.ko Cheers, -- Aurélien Aptel / SUSE Labs Samba Team GPG: 1839 CB5F 9F5B FB9B AA97 8C99 03C8 A49B 521B D5D3 SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg, DE GF: Felix Imendörffer, Mary Higgins, Sri Rasiah HRB 247165 (AG München)