You might not have permission to use this network resource. Login failure

[zillah]

I tried the search below
http://www.google.com.au/search?hl=e...G=Search&meta=

But I was not able to solve my problem

I have got Desktop with XP Pro, and Laptop with XP Pro SP3.

On Desktop --> Run --> \\Laptop\C$ or D$,,,,,,,,,,,,,,,,,I have got no problem (hidden default administrative share)

On Laptop -> Run --> \\Desktop\C$ or E$ (hidden default administrative share), I had been presented with the below error message

You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permission Login failure : the user has not been granted the requested logon type at this computer

1- No firewall on both PCs

2- Having same account and same passwords did not solve the problem.

3- "Simple file sharing" unticked from both PCs.

4- Laptop connected to a router wirelessy and Desktop is connected wired.

5- All of the sudden this problem happened, it was working before.

What else should I try to overcome this problem ?

[Hilfiger]

Do you have a restore point that precedes the onset of the problem? If so, try doing a system restore. Restart the system, press F8 and select Safe mode.