Azure OpenAI Issues -eastus2

Hello Daniel,

If you are experiencing sporadic 401 errors when accessing Azure OpenAI GPT-4.1 in the eastus2 region, this usually indicates authentication or authorization issues. These errors can occur due to several reasons:

Platform Instability: If these errors are intermittent and started recently, there may be temporary platform issues or service disruptions on Azure’s backend in eastus2. Check the Azure status page for any service advisories or outages affecting OpenAI resources in your region.

Authentication Tokens: Ensure your API requests are using valid authentication tokens. Expired or malformed tokens will trigger 401 errors. Refresh tokens as per Azure’s recommended lifecycle and confirm that you’re using the correct resource URLs.

Subscription or Permission Changes: If there have been updates to your Azure subscription, access policies, or service assignments, you may need to reauthorize access or adjust IAM roles for your application or service principal.

Regional Constraints: Occasionally, features or resource limitations may be more restrictive in one region compared to another. If you can, run a test in a different region (such as eastus or westus) to isolate whether this is a region-specific issue.

Currently, there is no official confirmation of a widespread outage, but sporadic 401 errors across multiple users may indicate a platform-side problem. If it persists, it’s advisable to raise a support ticket with detailed logs including request headers, timestamps, and affected resource IDs, and provide error examples to Azure support. Kindly approve this answer if you feel it is helpful.

Best Regards,

Jerald Felix