cached domain credentials not working

I am running Windows XP SP3 on a laptop. The user when connected to the network logs in with their domain credentials just fine. When they disconnect from the network then they are not able to logon with their domain credentials, its like they are no cached. After that, the user is also denied access to Outlook Web Access when they enter their domain credentials. but Outlook on the local machine works properly when connected directly to the network. Can anyone please help.

I assume that corporate network uses its own system. So you should not try to unlock it, you wont be able to use it again.

You can try to login on to a desktop with cached credentials that will not be an issue, but logging on to RDP session may be a different scenario requiring some level of DNS name resolution. You can also check the below links:

http://technet.microsoft.com/en-us/l...(v=ws.10).aspx

http://support.microsoft.com/kb/167234