
Hi @Muhammed Fazeel
Welcome to our forum!
As i know: To render Actionable messages correctly, Outlook uses the following GET request to get the Actions protocol endpoint URL from the Autodiscover V2 service: https://outlook.office365.com/autodiscover/autodiscover.json/v1.0/<user email address>?protocol=actions
.
If the request is successful, the Autodiscover V2 service returns HTTP status code 200 and provides the requested URL in the response body. However, if the Autodiscover V2 service is disabled on the user's computer that has Outlook installed, the GET request fails, and Outlook can't connect to the actions protocol endpoint.
Please refer to the article Actionable messages render incorrectly - Outlook | Microsoft Learn and have a try.
Hope it helps!
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