Forbidden: Your resource has been temporarily blocked because we detected unusual behavior.

Question

Forbidden: Your resource has been temporarily blocked because we detected unusual behavior.

Saaduddin Mahmud 0

My Azure AI/OpenAI resource is returning HTTP 403 for model inference.
Error: {"error":{"code":"Forbidden","message":"Your resource has been temporarily blocked because we detected unusual behavior."}}
This is blocking research experiments. The traffic was generated by a local evaluation harness running repeated receiver-agent inference requests, not intentional misuse or user-facing abuse.
Affected deployment/model: grok-4-1-fast-reasoning
Also seeing issues with: gpt-5.4-mini

How can I fix this?

SRILAKSHMI C 19,735 Reputation points Microsoft External Staff Moderator

2026-05-26T11:01:13.2133333+00:00

Hi @Saaduddin Mahmud,

Did you get any chance to review the above response. Do let me know if you have any further queries.

Thank you!

2 answers

Your answer

SRILAKSHMI C 19,735 Reputation points Microsoft External Staff Moderator

2026-05-26T11:01:13.2133333+00:00

Hi @Saaduddin Mahmud,

Did you get any chance to review the above response. Do let me know if you have any further queries.

Thank you!

Answer 1

Hi @Saaduddin Mahmud

Thank you for reaching out to Microsoft Q&A.

We got reply from the backend team,

The HTTP 403 error you are seeing with the message about unusual behaviour is because your Azure OpenAI resource has been temporarily blocked by the platform’s abuse detection system. This is an intentional Trust and Safety action and not due to a service outage or platform bug.

This kind of block can happen when the system detects patterns that look unusual, such as repeated requests, high frequency calls, or activity that may trigger safety or policy checks. From the platform side, this is expected behavior and is done to protect the service.

At this stage, there is no configuration change or troubleshooting step that can unblock the resource directly from the service side. The correct way forward is to request a review through the abuse mitigation process.

What you can do now is:

Submit an appeal through the Azure OpenAI abuse or mitigation request process
Provide your subscription details and resource name
Share a brief explanation of your usage scenario so the team can review and validate it

Once submitted, the relevant team will review your case and take appropriate action if the block was applied in error.

Here is the form Limited Access Review: Modified Abuse Monitoring

In short, this is not a technical issue in your setup but a safety enforcement action, and it requires review through the designated process.

Thank you!

SRILAKSHMI C 19,735 Reputation points Microsoft External Staff Moderator

2026-06-09T06:00:13.81+00:00

Hi @Saaduddin Mahmud,

Following up to see if the above answer was helpful. If this answers your query, please do click Accept Answer and Yes for was this answer helpful. And, if you have any further query do let us know.

Thank you!

Answer 2

Saaduddin Mahmud hi,

The exact message means the AI resource was temporarily blocked by Microsofts abuse/risk systems because the traffic pattern looked unusual. In ur case the local eval harness with repeated agent calls is probably the trigger, even if the intent was legit research. First stop the harness and dont keep retrying, because retry storms can keep the block active. Then open Azure Support under Azure OpenAI / Foundry Models and request a temporary block / unusual behavior review. Include resource name, subscription ID, model deployments (grok-4-1-fast-reasoning, gpt-5.4-mini), timestamps, request IDs/correlation IDs, and explain it was automated evaluation traffic, not production abuse. After unblock, add rate limiting, exponential backoff with jitter, lower concurrency, and avoid repeated identical prompts at high speed.

rgds,

Alex

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