Graph transcript content returns SpeakerAttributionNotAllowed even though "Include speaker attribution" is enabled

Question

Graph transcript content returns SpeakerAttributionNotAllowed even though "Include speaker attribution" is enabled

Jihad ISSA 0

Hello,

Since the new tenant controls for Teams transcript API access were enforced, I've been trying to download meeting transcripts through Microsoft Graph with speaker attribution.

In the Teams admin center, under Meetings > Meeting settings > Transcript API access, I have turned on:

Microsoft Graph access
Include speaker attribution (in the Configure panel)

When I request the transcript content in VTT format, I still get a 403:

https://graph.microsoft.com/v1.0/users/{userId}/adhocCalls/{callId}/transcripts/{Uri.EscapeDataString(transcriptId)}/content

{
  "error": {
    "code": "Forbidden",
    "message": "Speaker-attributed transcript content is disabled for this tenant.",
    "innerError": {
      "code": "SpeakerAttributionNotAllowed",
      "message": "Speaker-attributed transcript content is disabled for this tenant. Retry with Accept 'application/vnd.microsoft.graph.transcript+text'.",
      "date": "2026-09-16T12:37:03",

    }
  }
}

0 comments

2 answers

Your answer

Answer 1

SpeakerAttributionNotAllowed on the /content endpoint means Microsoft Graph still considers speaker-attributed transcript content unavailable for that tenant request.

What to verify:

Confirm Graph transcript access is enabled at the tenant level.
- In Teams admin center: Meetings > Meeting settings > Transcript API access
- Microsoft Graph access must be On.
- If this is off, all transcript requests return 403 Forbidden with GraphAccessToTranscriptsDisabled.
Confirm speaker attribution is enabled.
- In the same settings area, select Configure.
- Include speaker attribution must be On.
Confirm the request is actually asking for the attributed format.
- The /content endpoint supports:
  - text/vtt = speaker-attributed
  - application/vnd.microsoft.graph.transcript+text = unattributed
- text/vtt can be selected with the Accept header or $format.
- application/vnd.microsoft.graph.transcript+text must be selected with the Accept header only.
Branch on innerError.code.
- SpeakerAttributionNotAllowed specifically means the request asked for text/vtt while speaker attribution is not allowed for that tenant request.
- GraphAccessToTranscriptsDisabled means transcript API access itself is disabled and there is no request-side workaround.
Use the unattributed format as a fallback.
- Retry the same /content request with:
```
     Accept: application/vnd.microsoft.graph.transcript+text
```
- That returns transcript text without <v Speaker> tags.

Important limitation:

The documentation states that the application/vnd.microsoft.graph.transcript+text format and the related tenant administrator controls take effect at the end of July 2026.
If the tenant setting appears enabled but text/vtt still returns SpeakerAttributionNotAllowed, the supported behavior from the API is still to treat that response as authoritative and retry with the unattributed format.
Metadata requests are not blocked by the speaker-attribution setting; this applies to /content only.

Expected behavior for attributed content:

text/vtt succeeds only when tenant speaker attribution is allowed.
If not allowed, /content returns:
- 403 Forbidden
- innerError.code = SpeakerAttributionNotAllowed
The documented recovery is to request:
- Accept: application/vnd.microsoft.graph.transcript+text

References:

Answer 2

Hin Vo 450 Independent Advisor

Hi @Jihad ISSA
From my understanding, looks like the error "code": "SpeakerAttributionNotAllowed" indicates that Microsoft Graph is still treating speaker-attributed transcript content as unavailable for this tenant request.

Since you've confirmed that both Microsoft Graph access and Include speaker attribution are enabled in the Teams Admin Center, could you also verify whether the corresponding tenant settings are enabled at the policy level?

You can check this by running this command:

Get-CsTeamsMeetingConfiguration | FL EnableGraphTranscriptAccess,EnableAttributedTranscripts

Reference: Manage transcript API access for Teams meetings

If both settings are enabled and the issue persists, please let me know whether these settings were enabled recently, as policy propagation delays may be a factor. Additionally, if possible, you could share the complete request headers with any sensitive information removed. This would help me determine whether the request is being processed as a speaker-attributed (text/vtt) transcript request.

Any update would be appreciated.

Jihad ISSA 0 Reputation points

2026-09-17T08:58:34.1266667+00:00
Hello @Hin Vo ,

Everything in the Teams Admin Center appears to be enabled correctly. Both Speaker Attribution and Graph API access to transcripts have been enabled for about a week.

I tested the transcript /content endpoint directly through Postman.

Request:

GET https://{webURL}/api/calls/{UserId}/transcripts/{CallId}/{TranscriptId}/content x-api-key: {redacted} Accept: text/vtt

The response is:

{ "error": { "code": "Forbidden", "message": "Speaker-attributed transcript content is disabled for this tenant.", "innerError": { "code": "SpeakerAttributionNotAllowed", "message": "Speaker-attributed transcript content is disabled for this tenant. Retry with Accept 'application/vnd.microsoft.graph.transcript+text'.", "date": "2026-09-17T08:43:44" } } }

This behavior is expected for text/vtt if speaker attribution is not available.

However, I also tested the same endpoint with:

Accept: application/vnd.microsoft.graph.transcript+text

which should request the transcript without speaker attribution.

The response is still:

{ "error": { "code": "Forbidden", "message": "Speaker-attributed transcript content is disabled for this tenant.", "innerError": { "code": "SpeakerAttributionNotAllowed", "message": "Speaker-attributed transcript content is disabled for this tenant. Retry with Accept 'application/vnd.microsoft.graph.transcript+text'.", "date": "2026-09-17T08:45:42" } } }

According to the current Microsoft Graph documentation, application/vnd.microsoft.graph.transcript+text should return the transcript without speaker attribution, even when speaker attribution is disabled.

Could you please verify why Graph is returning SpeakerAttributionNotAllowed even when the request explicitly uses the unattributed transcript format?

The two Graph request IDs from my tests are:

[Moderator note: Personally Identifiable Information removed]

Thank you.
Hin Vo 450 Reputation points Independent Advisor

2026-09-17T11:07:27.15+00:00

Hi @Jihad ISSA
Thank you for your update.

Based on the information provided, the tenant settings appear to be configured correctly, and you've already verified that the issue occurs with both text/vtt and application/vnd.microsoft.graph.transcript+text requests.

If all required settings are enabled and the behavior persists, I would recommend opening a support ticket through the Microsoft 365 Admin Center so the relevant team can verify the backend configuration and determine whether there is a service-side issue or an unexpected condition affecting transcript access for the tenant.

Reference: Get support - Microsoft 365 admin | Microsoft Learn

Note: To create a support ticket, you need to have Microsoft 365 admin privileges and if you aren’t admin of your organization, please contact the admin of creating a new ticket.

If you receive any updates or insights from the support team, please feel free to share them here. It could help other users who may encounter the same issue in the future.

Warm thanks.