Trend Micro PC-cillin

The POP3 Server Information Does Not Change and Error Messages Appear in Outlook Express 5.5 - (Cannot log on using Secure Password authentication and Unable to locate the POP3 server you specified )
http://support.microsoft.com/support/kb/articles/q312/3/47.asp

The programme can also stop downloads from working if the Real Time Monitor is running in the background.

Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity. Account: '<account name>', Server:'<server>', Error Number: 0x800CCC0F
http://support.microsoft.com?scid=kb;EN-US;Q318660

When you change the Post Office Protocol (POP3) server information for Outlook Express 5.5 and then restart the computer, you may receive one of the following error messages when you try to log on to your e-mail server:
Cannot log on using Secure Password authentication
Unable to locate the POP3 server you specified

http://support.microsoft.com?scid=kb;EN-US;Q312347

Blank page when you try to access Windows Update:
http://support.microsoft.com?scid=kb;EN-US;Q193701

"An invalid operation was attempted on an active network connection" error message if you try to browse the network:
http://support.microsoft.com?scid=kb;EN-US;Q318245

PC-cillin causes an error message in Windows XP:
http://support.microsoft.com?scid=kb;EN-US;Q321956

PC-cillin version 7.6 causes an error message in Windows XP:

http://support.microsoft.com?scid=kb;EN-US;Q320307