Increase the limit of concurrent users in Speech Services avatar

Question

Increase the limit of concurrent users in Speech Services avatar

Akbar Ali 0

I am getting this error message when concurrent users trying to access the application- "Unable to start avatar: The request is throttled because you have exceeded the concurrent request limit allowed for your sub websocket error code: 4429"
How do you place a request to increase the quota for concurrent users?

santoshkc 15,325 Reputation points Microsoft External Staff Moderator

2025-04-16T13:42:10.5333333+00:00

Hi @Akbar Ali,

If you're encountering an error when multiple users try to access your application, it means you've hit the default concurrency quota for Azure AI Speech Services, specifically for the avatar feature.

To resolve this, you'll need to request a quota increase. You can do this by going to the Azure Portal, select the Speech service resource. In the Support + troubleshooting group, select New support request. In summary, describe clearly state the current usage and the desired concurrency limit. Azure Support will review and process your request, usually within a few business days.

For more info, please refer to: Speech service quotas and limits.

I hope this helps! Thank you.
Akbar Ali 0 Reputation points

2025-04-17T11:19:05.11+00:00

I am in the S0 plan of PAYG where the quota limit for Azure AI Speech Services AI Avatar is 2 connections per minute. Is there a way to increase this? I am unable to find any ticket-raising system in MS Azure Dashboard.
Manas Mohanty 5,700 Reputation points Microsoft External Staff Moderator

2025-04-17T17:24:12.8366667+00:00

Hi Akbar Ali

We have noticed that you rated an answer as not helpful. We appreciate your feedback and are committed to improving your experience with the Q&A.

We are re-phrasing the steps with screenshot in attempt to recover the sentiment now.

Here is step by step process to raise quota.

Ensure you have the required information listed in the Prepare your required information

Go to the Azure portal.

Select the Speech service resource for which you would like to increase (or to check) the concurrency request limit.

In the Support + troubleshooting under Help tab, put "concurrency request limit" in Search bar and Hit enter then Select Cognitive Services (Cognitive Speech Services) click next.

Then Select your subscription and Resources (RG/Resource name) then Click next

Please select Quota or Subscription issues /Quota or concurrent requests increase as given in below screenshot

Click Next and Go to bottom of page then locate "Create support request" in Contact Support tab.

Once Create a support request window is open, Cross check your info in Step 1 and Go to Step 3 by Skipping the recommendation in Step 2. Share details on quota, how to reach and provide consent to check from backend and submit and clearly mention in detail that you want to increase concurrent request or user limit for speech avatar service.

Hope it provides the needed clarity.

Please let us know if it helps

Thank you.

1 answer

Your answer

santoshkc 15,325 Reputation points Microsoft External Staff Moderator

2025-04-16T13:42:10.5333333+00:00

Hi @Akbar Ali,

If you're encountering an error when multiple users try to access your application, it means you've hit the default concurrency quota for Azure AI Speech Services, specifically for the avatar feature.

To resolve this, you'll need to request a quota increase. You can do this by going to the Azure Portal, select the Speech service resource. In the Support + troubleshooting group, select New support request. In summary, describe clearly state the current usage and the desired concurrency limit. Azure Support will review and process your request, usually within a few business days.

For more info, please refer to: Speech service quotas and limits.

I hope this helps! Thank you.
Akbar Ali 0 Reputation points

2025-04-17T11:19:05.11+00:00

I am in the S0 plan of PAYG where the quota limit for Azure AI Speech Services AI Avatar is 2 connections per minute. Is there a way to increase this? I am unable to find any ticket-raising system in MS Azure Dashboard.
Manas Mohanty 5,700 Reputation points Microsoft External Staff Moderator

2025-04-17T17:24:12.8366667+00:00

Hi Akbar Ali

We have noticed that you rated an answer as not helpful. We appreciate your feedback and are committed to improving your experience with the Q&A.

We are re-phrasing the steps with screenshot in attempt to recover the sentiment now.

Here is step by step process to raise quota.

Ensure you have the required information listed in the Prepare your required information

Go to the Azure portal.

Select the Speech service resource for which you would like to increase (or to check) the concurrency request limit.

In the Support + troubleshooting under Help tab, put "concurrency request limit" in Search bar and Hit enter then Select Cognitive Services (Cognitive Speech Services) click next.

Then Select your subscription and Resources (RG/Resource name) then Click next

Please select Quota or Subscription issues /Quota or concurrent requests increase as given in below screenshot

Click Next and Go to bottom of page then locate "Create support request" in Contact Support tab.

Once Create a support request window is open, Cross check your info in Step 1 and Go to Step 3 by Skipping the recommendation in Step 2. Share details on quota, how to reach and provide consent to check from backend and submit and clearly mention in detail that you want to increase concurrent request or user limit for speech avatar service.

Hope it provides the needed clarity.

Please let us know if it helps

Thank you.

Answer 1

Hello Akbar Ali !

Thank you for posting on Microsoft Learn.

From the error you are having, the Azure Speech Services (specifically the avatar/conversational avatar feature) has hit the concurrent connection limit for your subscription.

You can request a quota increase directly through the Azure Portal by following these steps:

Go to the Azure Portal: https://portal.azure.com/
Search for “Speech” in the top search bar Then click on your Speech resource (used by your avatar application).
In the left panel, scroll down and select “Usage + quotas”.
Click on "Request Increase" at the top right.
Select:
- Type: "Speech Services"
- Quota type: "Concurrent Request Limit" or specifically for the avatar feature
- Region: Choose the correct region (where your Speech resource is deployed)
- SKU: Choose the correct SKU (F0, S0...)
Enter the new concurrent request limit you’re requesting. Be realistic but explain your expected user load.
Submit the request.

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Increase the limit of concurrent users in Speech Services avatar

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