Getting response as "Access is denied. Check credentials and try again" while calling the api to get messages

Shamsul Zama 0 Reputation points

I used the Microsoft Graph sample Ruby on Rails app to setup a ruby on rails application. After authentication, access token and refresh token are stored in the database.
When the List Messages Api is called using this access token. I am getting the below error from the response.

response = HTTParty.get("", :headers => {
  "Scope" => "Mail.Read",
  "Content-Type" => "application/json",
  "Authorization" => "Bearer #{user.access_token}"

{"error"=>{"code"=>"ErrorAccessDenied", "message"=>"Access is denied. Check credentials and try again."}}

I have attached the screenshot of permissionScreenshot 2024-04-03 at 11.28.57 AM

Microsoft Graph
Microsoft Graph
A Microsoft programmability model that exposes REST APIs and client libraries to access data on Microsoft 365 services.
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  1. CarlZhao-MSFT 36,496 Reputation points

    Hi @Shamsul Zama

    It works fine for me. Please decode your access token and check the scp claim to make sure it contains one of the Mail.ReadBasic, Mail.ReadWrite or Mail.Read permissions.

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    Hope this helps.

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