Key port 是什么？

Solution 1
In my case I reinstalled the network card and strangely that seemed to do the trick! If it doesn’t work for you, give the below solutions a try.

Solution 2
Try removing any proxy settings, you can do this by following these steps.
1) Open up Internet explorer
2) Click the tools menu, then Internet options
3) Select the connections tab
4) Click the “LAN Settings” button
5) Ensure “Automatically Detect Settings” checkbox is ticked
6) Untick “Use a proxy server for your LAN …” if checked
7) Click ok, then ok
8) Start up MSN and give it a whirl!

Solution 3
Check your windows System clock and ensure it’s set to the correct time and date.

Solution 4
Has your Norton subscription run out? Some people have reported this will stop MSN from working. (Not sure why … so don’t ask)

Solution 5
You can try resetting your Internet Security properties to defaults.
1) Open up In