Cannot Verify Server Identity. The identity of @outlook.office365.com@ cannot be verified.

Anonymous
2020-05-26T15:26:48+00:00

I have this message appearing on my iPad every 20 seconds or so.  I use an Office365 exchange account to sync email, contacts and calendar onto the iPad and also use Onedrive for storage along with Word, Excel, Powerpoint etc.

I have had periods of tim when this error message appears, but usually only for 24 hours max.  If it is for a prolonged period, I found that deleting the Exchange account from the iPad and setting it up again often cured the problem.

This time it has been going on for weeks, with no let-up.  I have deleted and set the account up again twice, to no avail.  Please help it's driving me bonkers.

Microsoft 365 and Office | Subscription, account, billing | For business | Other

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  1. Anonymous
    2020-11-01T02:03:35+00:00

    My issue was with an Office 365 email account in my iPhone. I also have a Hotmail account configured and that is not a problem. I ended up deleting the Office 365 account on my phone, installing the Outlook ios app, adding the accou there, and have had no issues since. Not ideal as i dont want a separate app, i want all email back on my native ios mail app.

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  2. Anonymous
    2020-11-01T01:45:56+00:00

    Same issue for me - same message - same certificate. Getting the error on my iPhone, turning off SSL did not eliminate it. Deleting and reinstalling the account did not resolve it. Mac is working fine - I can still email from and to the account but the message is disruptive to everything!

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  3. Anonymous
    2020-11-01T01:41:59+00:00

    For those posting that they did some type of intervention today, please try it again.  I did nothing, and for about 6 hours today, this Mail Certificate error went away and things resumed working normally...until now.  It's back!  So for those who did something during the time that it was not a problem, I'm afraid your "fix" just happened to be instituted during the period of time when the issue temporarily resolved.   Back to the drawing board and waiting for the powers that be, to fix this!

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  4. Anonymous
    2020-11-01T01:05:24+00:00

    I deleted my hotmail account across all devices and readded them, and it resolved the issue.

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  5. Anonymous
    2020-11-01T01:03:15+00:00

    I still think it is Microsoft's problem even though I have the same account on my Galaxy phone and have no problems.  The phone is connecting to a Microsoft domain and servers, and so they need to ensure their systems work with all common environments 

    • IOS is pretty common.  And if it doesn't, they need to find a resolution.

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