Q: What is error 0x800CCC01/0x800CCC02 Invalid Security Certificate for Incoming or Outgoing server?
Posted by - NA - on 24 Apr 2009 1:15 PM
A: This is an Outlook Express and Microsoft Outlook generated error see below for possible resolutions:
  • This was a common issue for people neglecting to update their mail servers during the migration (
  • Customer to confirm that the incoming and/or outgoing mail server is valid and up to date with their service provider.

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