Access Denied to Graph (despite valid access token and permissions)

Question

Hi,

I'm getting Access Denied for trying to do a GET request on https://graph.microsoft.com/v1.0/users/${userId}/messages

• I've obtained a valid access token from:
  • https://login.microsoftonline.com/consumers/oauth2/v2.0/token
• I've obtained my User ID from
  • https://graph.microsoft.com/v1.0/me

But I cant successfully get my emails from the graph API.

My App's permissions are as follows:

Why is the API still denying my access?

Answer 1

What if you use:

https://graph.microsoft.com/v1.0/me/messages

Answer 2

Hello josh j,

Thank you for reaching out to Microsoft Support!

After testing, the test results are good, the endpoint is no problem, the test results are as follows:

For your error, please check the following:

1.Try to use https://graph.microsoft.com/v1.0/me/messages or https://graph.microsoft.com/v1.0/users/ {userPrincipalName}/messages to list messages

2.Try to use common endpoint access token https://login.microsoftonline.com/common/oauth2/v2.0/token

3.Check whether the token has valid permissions and parse the token in jwt.ms, as shown in the following figure:

4.If you get messages from other users, you need to get authorization from other users

Reference document:

https://learn.microsoft.com/en-us/graph/api/user-list-messages?view=graph-rest-1.0&tabs=http

Hope this helps.

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