Your mail server certificate is invalid error

Anonymous
2018-03-03T15:59:06+00:00

I am attempting to use Outlook on my android phone.  When I attempt to add my email account to outlook (on my phone) I get an error that says:  Your mail certificate is invalid.  Would you like to login anyway.   PLEASE HELP!!!!

Outlook | Outlook for mobile | Outlook for Android | For business

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

0 comments No comments

102 answers

Sort by: Oldest
  1. Anonymous
    2018-04-26T17:10:45+00:00

    Mystery 500,

    What version of Exchange are you running?

    Was this answer helpful?

    0 comments No comments
  2. Anonymous
    2018-04-26T17:15:50+00:00

    In Outlook I clicked on settings and then add account and then add email account, not sure where you were trying to do this, and that is how it worked today, unlike yesterday. Hope this helps.

    Was this answer helpful?

    0 comments No comments
  3. Anonymous
    2018-04-26T17:18:53+00:00

    Suddenly having problems again, not able to log-in once more, did not last.

    Was this answer helpful?

    0 comments No comments
  4. Anonymous
    2018-04-26T17:21:09+00:00

    I have the latest app on iOS and it is still not working. Thinking this is not just an app thing?? Yesterday my app worked all morning. Tried it in the afternoon and it started with the invalid cert message. It is like that with all my coworkers with both iOS and Android apps (latest). What would change in the middle of the day. All my certs are current. Like others, OWA and the native mail apps on both iOS and Android work with no problems.

    Was this answer helpful?

    0 comments No comments
  5. Anonymous
    2018-04-26T18:18:28+00:00

    Working again on both IPad and IPhone, hope everyone else gets it sorted.

    Was this answer helpful?

    0 comments No comments