The application asked for scope 'chat.read.all' that doesn't exist on the resource

Question

Hi,

I'm working on implementing an application that is to extract chat logs of Teams.
My application is based on quick start for UWP and it perfectly worked.

However when I change scopes to read chats:

private string[] scopes = new string[] { "user.read.all", "chat.read.all" };

After logging in, it says:

AADSTS650053: The application '...' asked for scope 'chat.read.all' that doesn't exist on the resource '00000003-0000-0000-c000-000000000000'. Contact the app vendor.

Are there somewhere wrong in my implementations?

Thank you.

Answer 1

Hello @tomoyuki owada

If you are using delegated permission make sure you use "Chat.Read" instead of "Chat.Read.All" as this permission does not exist in delegated permissions.

If you are using Application Permission make sure you have requested for Protect API as per this document.

If you have not requested, please follow this document to access the request form.

Hope this helps.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Answer 2

Hi @tomoyuki owada

Thank you for asking this question on the **Microsoft Q&A Platform. **

Did you request access to use the API?

See: chats: getAllMessages and Protected APIs in Microsoft Teams for more details.

Hope this helps,
Carlos Solís Salazar

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