valid users with AD group

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Environment

SUSE Linux Enterprise Server 15 SP2

Situation

System is joined to domain via winbind. With "wbinfo -u" and "wbinfo -g" all the AD users and groups can be seen.
When accessing a samba share, the following error is displayed

"Access is Denied"

This happens when setting the following in /etc/samba/smb.conf
valid users = @"<domain>\<AD group>"

It works when the "valid users" line is deleted.

Resolution

Instead of valid users = @"<domain>\<AD group>", try valid users = +"<domain>\<AD group>". Restart of samba service is required after changing it.

Cause

The man page of smb.conf explains the difference between + and @ in detail.

Disclaimer

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