Share via

Invalid deployment or region” error when calling Azure OpenAI endpoint

poovarasan poovarasan 20 Reputation points
2025-11-05T00:54:09.0966667+00:00

Hi everyone,

I’m seeing intermittent errors when calling my Azure OpenAI deployment. Most requests succeed, but occasionally I get:

Invalid deployment or region

Then retrying a second later works without changing anything. Deployment name, region, and keys are all correct, and nothing has been moved or rotated.

Azure AI Custom Vision
Azure AI Custom Vision
An Azure artificial intelligence service and end-to-end platform for applying computer vision to specific domains.
0 comments
Answer accepted by question author
  1. Azar 31,610 Reputation points MVP Volunteer Moderator
    2025-11-05T01:07:07.03+00:00

    Hi there

    This can happen occasionally when the request hits a backend routing node that hasn’t refreshed deployment metadata yet. If the exact same call works on retry, it’s not a config issue on your side — it’s a transient gateway/region lookup glitch. The best practice is to add lightweight retry logic (e.g., 1–2 retries with exponential back-off) since Azure OpenAI can briefly return these errors during scale or cache refresh events. Also double-check you're using the regional endpoint and not the global one, as global routing can make this happen a bit more often.

    If this helps kindly accept the answer.

    0 comments

0 additional answers

Sort by: Most helpful
Most helpful Newest Oldest

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.