A solution (there could be several causes)
*netsh winsock reset
* On the target machine (the one you’re trying to connect to) open up Services, under Administrative Tools in the Start Menu.
* Scroll down to the Computer Browser service.
* If it is Disabled or set to Manual, set it to Automatic.
* Then start it. It may stop immediately again, but this is OK.
* At this point try to connect to the target machine.
If it still doesn’t work, you can try the following:
* open up Network Connections, under Control Panel.
* Right click on your network adapter and click on Properties.
* Click on Internet Protocol (TCP/IP), then click on Properties.
* Click on Advanced, and click on the WINS tab.
* Even if it is set to Default, set the radio button to Enable NetBIOS over TCP/IP.
* Press OK on each screen until everything’s closed.
* Go back to the client machine and try again.
* You should be able to connect!
If it still doesn’t work:
* Go back to the Services window and find the service named Routing and Remote Access.
* Double-click on it, set it to Manual, and stop it.
* Close Services and try to connect from your client machine again.
- p/s: Chú ý kiểm tra tắt netware trên máy client.