Take a look at these 2 sites. They should be able to give you some good information and some great troubleshooting tips for your error code 0x800CCC90!
http://support.microsoft.com/kb/198704
http://www.zolved.com/synapse/view_content/20296/Troubleshooting_Outlook_Express_Error_0x800ccc90
I hope this helps!
Brett M,
Windows Outreach Team
We have today started to receive the following error message on both our PCs (running Windows XP and both Greenbee and Waitrose servers) when trying to receive mail through Outlook Express v6.0.
The server responded with an error. Account: 'mail.greenbee.net', Server: 'mail.greenbee.net', Protocol: POP3, Server Response: '-ERR AVG POP3 Proxy Server: Cannot connect to the mail server!', Port: 110, Secure(SSL): No, Server Error: 0x800CCC90, Error Number: 0x800CCC90
I've had this message before and I seem to recall I had to delete or change a value somewhere but I can't remember where, or where I got the remedy from. It was an error in AVG Free and was supposedly going to be fixed. Is it a coincidence that at the same time as this problem appeared we have started to receive invitations to upgrade to the paid for version of AVG?

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