iCloud invalid security certificate

[Dr McKay]

I use my @me.com email on all my devices with no problem, but Outlook 2013 throws a tantrum roughly every hour and tells me this about the security certificate. If I click yes mail continues to come in just fine.

My phone or tablet don't give me this error, using default settings, as in I typed in my email and password and it fetched the settings automatically.

 

[Dwimmerlaik]

I'm having this same issue. I wonder if it's because I had an @me.com email address back in the day before Apple stopped issuing them and moved everyone over to the @icloud.com domain. I've noticed some odd behavior with my account when accessed via IMAP using Outlook 2013 and this is only one of the issues.

Were you ever able to figure out a solution?

 

[Lunettes]

Same problem here...