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IMAP Connectivity Failed

Eliezer C 1 Reputation point
2023-01-10T11:46:57+00:00

I'm having this error:

Testing the SSL certificate to make sure it's valid. The SSL certificate failed one or more certificate validation checks. Test Steps

The Microsoft Connectivity Analyzer is attempting to obtain the SSL certificate from remote server outlook.office365.com on port 993. The Microsoft Connectivity Analyzer wasn't able to obtain the remote SSL certificate. Additional Details The certificate couldn't be validated because SSL negotiation wasn't successful. This could have occurred as a result of a network error or because of a problem with the certificate installation.

Outlook
Outlook
A family of Microsoft email and calendar products.
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Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Faery Fu-MSFT 19,596 Reputation points Microsoft External Staff
    2023-01-11T06:02:46.1866667+00:00

    Hi @Eliezer C ,

    Please also check Outlook's Test Email AutoConfiguration.

    If you could successfully test it with Autodiscover, just ignore the test result.

    Here is a similar thread for your reference.

    Best regards.

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment". Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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