Office 365 Activities Fail To Authenticate

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Why are Office 365 activities failing to authenticate though the required API Permissions are maintained?

There is a possibility that few applications do not work with Delegated Permissions when using ApplicationIdAndSecret or ApplicationIdAndCertificate Authentication type.

Try the below recommendations and observe

  • Provide Application Permissions instead of Delegated Permissions for the below list of API Permissions (Add API Permission)

  • Make sure that the Application Secret being used is valid and not expired.