wireless connection stopped working

  Throbber 12:47 28 Jun 09

My wireless connection whicha has worked fine for ages has suddenly stopped working. Wired connection is fine. I have 1 laptop running Vista basic, one running XP pro, and a desktop running XP pro which previously connected wirelessly. Now on the desktop I get the error message "Windows was unable to find a certificate to log you onto the network home Network."
Anyone know how to fix this.
My modem router is a Belkin N.

  mgmcc 13:35 28 Jun 09

Try setting up the WPA encryption again in both the router and the computers that connect to it "wirelessly".

  Throbber 11:49 01 Jul 09

Thanks mgmcc. In fact I just ran the setup wireless network again, and that seems to have worked.

  Throbber 11:58 01 Jul 09

I have for years been able to connect from home to a work site using a VPN connection. This has suddenly stopped working, and I get the error message "Error connecting to server." on XP, and "Failed to download code" on Vista [which seems to get further along the process.] A colleague is able to log in from his home computer using my details & pass word. Any suggestions?

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