Cannot access File Server from one workstation but can from another in a network

If you are unable to connect file server in a workgroup. Try the following
1. Reboot the computer
2. Rejoin the computer to the domain
You can also
Try connecting to network share by it's IP Address instead of the server name for example: \\192.168.1.1\NetworkShareName
reset the users account password on the server to match what is on the workstations.
confirm by logging on to the server with that user account and password. When successful do the same from a workstation.