On my new PC running Ubuntu 20.04, I cannot connect and mount our organisation's windows share //server/share either by setting up fstab or by manual mounting such as:sudo mount -t cifs -o username=xxxx,vers=1.0 //server/share /media/share (dmesg: CIFS VFS: cifs_mount failed w/return code = -2) or:sudo mount -t cifs -o username=xxxx,vers=2.0 //server/share /media/share (CIFS VFS: BAD_NETWORK_NAME: \server\share CIFS VFS: cifs_mount failed w/return code = -2).
I have tried a lot more variations than the two. It has worked for years on my old PC. The funny thing is that Ubuntu's own Files application connects easily ("Other Locations" > "Connect to server") with typing into the Server Address box smb://server/share and then user name and password. (using smb://server/share in mount does not work).
I have tried many ideas around on the net, but all in vain. So any feedback would be awesome!