In order to access a different computer and if it doesn't work from TotalCmd or Remote Desktop, you have to follow these steps:

A
1. Go into My Computer
2. In Tools - > click Map network drive
3. In the dialog box appeared insert:
path to computer: \\fileserver\kit2
4. Click Connect using different user name and enter user and pass

B
Next time you want to log on to the computer, if the connection cannot be establish
1. In My Computer - right click -> Disconnect
2. use the same steps (A 1-4)