Cannot authenticate to ms addin application because of expired certificate

Test Uer 1 Reputation point
2022-09-29T09:02:50.79+00:00

the Addin application is not haing suppoert to read Microsoft exchange keys from https://outlook.office365.com/autodiscover/metadata/json/1.
But the Tokens signed by these certificates. Is there any way to get these as certificate(.cer, .der, .pem) format.

and also cant access https://outlook.office365.com/EWS/Exchange.asmx its always throwing 401.

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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