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LarsKnoll's avatar
LarsKnoll
Copper Contributor
May 19, 2025

setReaction and softDelete for channel messages broken?

Hi, I have some issues using the setReaction and softDelete APIs for channel messages in MS Teams. It’s relatively easy to reproduce for me from the the MS Graph explorer. I have a message in a cha...
developer
microsoft teams
LarsKnoll's avatar
LarsKnoll
Copper Contributor
May 21, 2025

Hi Karan,

  1. I’m using a delegated token, see the decoded JWT which shows that it’s a user token (of the admin of my test tenant). You can also see the scopes in there and I do have the required ChannelMessage.ReadWrite (ChannelMessage.ReadWrite.All that you mention doesn’t exist).
  2. I am a member of the team, and it is a standard channel (although private and shared channels should afaik also work just fine with delegated tokens)
  3. Can you explain this a bit more? I’m using a standard test tenant for those tests, and I don’t have any special permissions or other stuff setup on the channel. Also if there are other things that can make these calls fail, it would be good to know about those when our customers report errors with our app (Conclude in the MS Teams Store)
  4. I’m using correct endpoints according to the docs. Note that an incorrect endpoint should have given me a rather different error message
    1. These are being used for setReaction
      1. POST /teams/{teamsId}/channels/{channelId}/messages/{chatMessageId}/setReaction POST /teams/{teamId}/channels/{channelId}/messages/{messageId}/replies/{replyId}/setReaction
    2. These for softDelete (according to your docs, it’s POST, not DELETE!)
      1. POST /teams/{teamsId}/channels/{channelId}/messages/{chatMessageId}/softDelete
      2. POST /teams/{teamId}/channels/{channelId}/messages/{messageId}/replies/{replyId}/softDelete

I honestly can’t see anything I’m doing wrong here. We got those as reports from customers of our app (Conclude in the MS Teams Store) and I know things used to work earlier. I tested the functionality thoroughly when we implemented it last year. I can reproduce this both in our app and using the MS Graph explorer. 

Best regards,

Lars

KARAN_SHEWALE0525's avatar
KARAN_SHEWALE0525
Icon for Microsoft rankMicrosoft
May 23, 2025

 

Hi LarsKnoll,

Thanks for your message!

The 403 Forbidden error usually means there’s a permission issue. Based on the error you shared, here are a few possible causes:

What Might Be Going Wrong:

  • The access token you’re using might be missing the needed permissions (like ChannelMessage.ReadWrite, setReaction, or softDelete).
  • Your Azure app might not have admin consent for those permissions.
  • The user may not have the right role—for example, they’re not the message author or not an owner of the team or channel.

What You Can Do:

  1. Check Token Permissions:
    • Make sure your token includes scopes like ChannelMessage.ReadWrite.
    • Also, check if the token is valid for the type of channel (standard, private, or shared).
    • Access tokens and Graph permissions
  2. Verify Admin Consent:
    • Go to Azure Portal > Azure AD > App registrations > [Your App] > API permissions.
    • Ensure the required permissions are listed and that admin consent has been granted.
    • Granting admin consent in Azure AD
  3. Check User Role:

Thanks,  

Karan.

*************************************************************************  

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  • LarsKnoll's avatar
    LarsKnoll
    Copper Contributor
    May 23, 2025

    Hi Karan,

    Did you actually read my earlier messages? As I said there:

    • The token has the ChannelMessage.ReadWrite permission
    • The user is a member of the team, and I’m using a standard channel. I can also list, create and edit messages using the same token.
    • The user is the author of the message (although that shouldn’t matter for setReaction) and editing it succeeds (see the first screenshot in my first message)

    The fact that editing the message succeeds, but setReaction and softDelete fails indicates an issue on your side, not mine. All three actions require (according to your docs) the same permissions.

    best regards,

    Lars

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