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
    2018-04-26T15:07:28+00:00

    Can someone tell me if an update to the Outlook app removed support for TLS 1.0?  Exchange Server 2007 is only capable of TLS 1.0 and doesn't support TLS 1.1 or TLS 1.2.  Exchange Server 2010 reportedly will support TLS 1.1 and TLS 1.2 if Update Rollup 9 for Exchange Server 2010 Service Pack 3 is installed.  Has Microsoft dropped support for TLS 1.0 in the new versions of the Outlook app?

    Was this answer helpful?

    1 person found this answer helpful.
    0 comments No comments
  2. Anonymous
    2018-04-26T15:10:49+00:00

    Yes I thought of the same thing. I would think they would mention that in the current build release though...   :(

    Was this answer helpful?

    0 comments No comments
  3. Anonymous
    2018-04-26T15:15:32+00:00

    I don't know how to explain it but my Outlook app hasn't updated since March 29 and my last Android was last updated on April 5, go figure.  Everything broke on April 24.

    It clearly has something to do with the MS Outlook app because the native GMail app is working just fine and OWA also works fine.

    Was this answer helpful?

    0 comments No comments
  4. Anonymous
    2018-04-26T16:37:39+00:00

    Please make sure that you update your app, as there is a new version and it now works, thank goodness!

    Was this answer helpful?

    0 comments No comments
  5. Anonymous
    2018-04-26T16:39:31+00:00

    An update for Outlook on Android or iPhone?  I don't see it on Android.

    Was this answer helpful?

    0 comments No comments