Have you Googled it to find any solutions? Here's one I came up with. If anyone experience the same kind of problem, here is the solution of the problem:
- Click Start - Click Control Panel - Click System and Maintenance - Click Administrative Tools - Double-Click Local Security Policy - In the left pane, click the triangle next to Local Policy - In the left pane, click Security Options - In the right pane near the bottom, double-click "Network security: LAN manager authentication level" - Click the drop-down box, and click "Send LM & NTLM responses" - Click OK |