You might not have permission to use this network resource error.

1. Click Start, click Run, type regedit in the Open box, and then click OK. 
2. Locate and then double-click the following registry subkey: 
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Lsa 
3. In the right pane, double-click restrictanonymous. 
4. Make sure that the value in the Value data box is set to 0, and then click OK. 
5. Close Registry Editor. 
6. Restart the computer.