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
    2018-04-29T22:09:50+00:00

    This would be down to ISps to do this, not indivual users. Talktalk is not my ISP, but my email is Tiscali, which I have and have had when I was with Tiscali ISP, but they were taken over by tallktalk.

    Not in all cases.   I have an on prem exchange server and can control this myself for the company.

    Was this answer helpful?

    0 comments No comments
  2. Anonymous
    2018-04-29T22:12:36+00:00

    A chat with support on the Outlook App for Android(yes if you click support they do respond) but they are TOTALL useless.  Claim that it is a certificate problem on our end.  Mail on Windows 10 and on my tablet work just fine and have only complain about the certificate one time when you first authenticate but when you say yes to do you want to connect anyway it works just fine.

    Microsoft needs to fix these problems ASAP or they will lose a whole lot of users.  Do you think its all in attempt to get people to move to the Outlook cloud?  That would be diabolical.

    As an end user, you have no control over the server side.  As an engineer/architect, I have total control over my environment that I host for my end users. 

    This is a mistake on microsofts end for not giving a heads up to the public when they would discontinue support for tls 1.0 and 1.1 on the app to allow hosts to prepare

    Was this answer helpful?

    1 person found this answer helpful.
    0 comments No comments
  3. Anonymous
    2018-04-29T22:13:23+00:00

    Well, you are lucky then, wish we could all do this, pity we have to fight to get providers to update their servers.

    Was this answer helpful?

    0 comments No comments
  4. Anonymous
    2018-04-29T22:17:25+00:00

    I agree with you there and wish that either Microsoft or providers would sort this out with their servers, we must keep fighting for this and not give up.

    Was this answer helpful?

    0 comments No comments
  5. Anonymous
    2018-04-30T08:39:23+00:00

    This is still happening on my Galaxy S7 edge using MS Outlook with a talktalk email address. So irritating........................................

    Was this answer helpful?

    0 comments No comments