The server has been running very stable with 12.04 LTS for years but after upgrading to 14.04 LTS a encountered huge samba issues. Directly after upgrade the mapping from Windows was toggling but there was a samba fix next day correcting this. It has run fine for weeks but after the last updates it doesn't work at all. Yesterday I even tried to remove and reinstall samba without success.
Have read the other threads but it doesnt help me. Everything looks fine in Webmin 1.680. Users and shares exists. I reentered the passwords but I cannot map any network drive from Windows anymore.
System error 53 has occurred. The network path was not found.
It is no DNS issue. I get the same error when using IP-address. HTTP, SSH and ping works fine with host name.