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azure-active-directorymicrosoft-graph-apioutlook-restapi

Unable to obtain Microsoft Graph OAuth access token

I'm following this documentation to get an access token to call Graph APIs for Outlook Calendar. I've registered my app on Azure AD admin center, created a client secret and exposed relevant APIs. The app is configured for multi-tenant access and I'm using OAuth v2.0 endpoints for authorization.

I can successfully get the authorization code but get this error when requesting an access token:

"error": "invalid_client",

"error_description": "AADSTS7000215: Invalid client secret is provided.",

"error_codes": [

    7000215

],

I send urlencoded client secret with the access token request, as mentioned here

Solution

  • You provided an invalid client secret.

    Just copy it from Azure AD app and paste it into your request. There is no need to url encode it.