Failure attempting to download new Guide data. Please ensure that you are connected to the Internet. If you connect through a LAN, ensure that your proxy or firewall has been properly configured.
I received this event on a Vista PC. In my case, it was a permissions issue. The log in credentials for the Media Center Scheduler service had been changed. Putting them back to network service cleared the problem.
Check internet connection settings. This is generally an issue with the proxy configuration. See "Media Center guide download errors and suggested fixes" for more details on Media Center errors.
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