How to solve this issue that the server you are connected to is using a security certificate?
This post fromMiniToolshows you solutions.
What Causes the Outlook Security Certificate Cannot Be Verified Error?
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It will show you 4 useful methods.
Way 1.
Now, here is the tutorial.

Once you received this outlook fault signal, you’re free to choose to clickView Certificate.
Then clickIssued to nameand ensure that the name is the same as the name of the mail server.
If it is not, change it and then try connecting again.
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If it does not work, try another solution.
Way 2.
The error code 0x8004011d can show up in Microsoft Outlook and Outlook 365 to point out the synchronization issues.
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If you have the same error, try these solutions.
