Forum Discussion
The security certificate has expired or is not yet valid
Hi Guys,
I am trying to connect my office365 account to my Desktop Outlook 2016 application and i am getting the following message "The security certificate has expired or is not yet valid"
I was searching for this issue but i didn't find any solution.
Does anyone know what to do?
Thank you!!
Stavros
15 Replies
This looks like it could be a result of being in hybrid where the certificate being presented by your on-premises server(s) for autodiscover may not be valid.
Thank you Christopher for your answer.
The only connectivity that office 365 has is with my hosting.
I checked again my DNS functions and i believe that are correct.
The autodiscover should be autodiscover.outlook.com if i am right.
Am i missing something here? :)
Thank you again
When you click the View Certificate button in the warning, what is the subject name that is displayed?
