Access to Windows Share stopped working

Dolphin suggests you are using KDE.

Try installing the packages gvfs and gvfs-smb

You could try to use

gio mount smb://server/share

I know you say is has worked - so check the file - you should have something specifying the dialect (NT1 being the deprecated SMB1) - the file is a requirement - albeit content is not :slight_smile:

/etc/samba/smb.conf
[global]
  min version = NT1
  workgroup = WORKGROUP