[Samba] Samba 4.12 network share issue

[David Faller]

Dear all,

I would need some help if we’re running in issues ‘cause a wrong configuration of our shares, or it’s a bug in samba 4.12
On samba 4.11 we have no issues with our network shares when Windows Clients connect them.

After upgrade to 4.12 we run in to the issue that network shares which are mounted as drives per gpo not working well,
We get on windows when we try to open the network drive the message : “Could not open drive, wrong handle” or the message “Another process is in use” and we can’t open the network share drive.

Also I noticed that smbstatus tell’s me some deny_all and deny_write on some users like the Domain Admin:

Pid          User(ID)   DenyMode   Access      R/W        Oplock           SharePath   Name   Time
--------------------------------------------------------------------------------------------------
21715        0          DENY_ALL   0x100080    RDONLY     NONE             /mnt/data/shares/Verwaltung   .   Thu Apr 23 09:23:14 2020
21715        3000036    DENY_NONE  0x80        RDONLY     NONE             /mnt/data/shares/Verwaltung   .   Thu Apr 23 08:19:58 2020
17843        0          DENY_NONE  0x100080    RDONLY     NONE             /mnt/data/shares/Verwaltung   .   Wed Apr 22 12:04:08 2020
21715        0          DENY_ALL   0x100080    RDONLY     NONE             /mnt/data-old/oldshare   .   Thu Apr 23 09:23:14 2020
21715        3000036    DENY_NONE  0x80        RDONLY     NONE             /mnt/data-old/oldshare   .   Thu Apr 23 08:19:59 2020
21707        3000046    DENY_NONE  0x80        RDONLY     NONE             /mnt/data-old/oldshare   .   Thu Apr 23 08:18:38 2020
21511        3000047    DENY_NONE  0x80        RDONLY     NONE             /mnt/data-old/oldshare   .   Thu Apr 23 07:08:11 2020
20398        3000047    DENY_NONE  0x80        RDONLY     NONE             /mnt/data-old/oldshare   .   Thu Apr 23 01:16:57 2020
17843        0          DENY_NONE  0x100080    RDONLY     NONE             /mnt/data-old/oldshare   .   Wed Apr 22 12:04:08 2020
21715        0          DENY_ALL   0x100080    RDONLY     NONE             /mnt/data/shares/Management   .   Thu Apr 23 09:23:14 2020
21715        3000036    DENY_NONE  0x80        RDONLY     NONE             /mnt/data/shares/Management   .   Thu Apr 23 08:19:58 2020
17843        0          DENY_NONE  0x100080    RDONLY     NONE             /mnt/data/shares/Management   .   Wed Apr 22 12:04:08 2020
21715        0          DENY_ALL   0x100080    RDONLY     NONE             /mnt/data/shares/shares   .   Thu Apr 23 09:23:14 2020
21715        3000036    DENY_NONE  0x80        RDONLY     NONE             /mnt/data/shares/shares   .   Thu Apr 23 08:19:59 2020
21707        3000046    DENY_NONE  0x80        RDONLY     NONE             /mnt/data/shares/shares   .   Thu Apr 23 08:18:38 2020
21511        3000047    DENY_NONE  0x80        RDONLY     NONE             /mnt/data/shares/shares   .   Thu Apr 23 07:08:11 2020
20398        3000047    DENY_NONE  0x80        RDONLY     NONE             /mnt/data/shares/shares   .   Thu Apr 23 01:16:58 2020
17843        0          DENY_NONE  0x100080    RDONLY     NONE             /mnt/data/shares/shares   .   Wed Apr 22 12:04:08 2020
21715        0          DENY_NONE  0x80        RDONLY     NONE             /mnt/data/shares/wsusoffline   .   Thu Apr 23 09:23:11 2020
21715        3000036    DENY_NONE  0x80        RDONLY     NONE             /mnt/data/shares/wsusoffline   .   Thu Apr 23 08:19:59 2020
21707        3000046    DENY_NONE  0x80        RDONLY     NONE             /mnt/data/shares/wsusoffline   .   Thu Apr 23 08:18:38 2020
21511        3000047    DENY_NONE  0x80        RDONLY     NONE             /mnt/data/shares/wsusoffline   .   Thu Apr 23 07:08:11 2020
20398        3000047    DENY_NONE  0x80        RDONLY     NONE             /mnt/data/shares/wsusoffline   .   Thu Apr 23 01:16:57 2020
17843        0          DENY_NONE  0x100080    RDONLY     NONE             /mnt/data/shares/wsusoffline   .   Wed Apr 22 12:04:08 2020



Share Permissions are set to Everyone can read write and change, under the security tab we have the domain users and domain admins as groups for example.

My question would be here how I can debug this issue, we needed to downgrade samba to 4.11 ‘cause our employees can’t work with broken shares. Sometimes they can open the share sometimes not. It looks like a delay.

Best Regards and I hope for help here,
David Faller