Is the Azure ML Model Registry service currently down?

Question

I tried to register a model by uploading the model folder through both the Azure ML website and VS Code, but both attempts failed with the following error:
(AlphanumericVersionNotSupported) Model field AlphanumericVersion is not supported.

I tried using 1, 0, and even leaving the version field empty, but the error still occurs in all cases.
Is the Azure ML model registry service currently experiencing issues?

Answer 1

Hello Issac Chan,

Welcome to Microsoft Q&A and Thank you for reaching out.

The issue you encountered is not due to a misconfiguration on your side, and it does not indicate a service outage.

The error:

(AlphanumericVersionNotSupported) Model field AlphanumericVersion is not supported

was caused by a transient issue in the Azure ML Model Registry service, where even valid numeric versions (such as 1 or 0) were being rejected. This behavior was observed more broadly and has since been mitigated.

What happened

The service was incorrectly validating the model version field

Even when using valid numeric values or leaving the version empty, the request failed

This created the appearance of a configuration issue, but it was actually a temporary backend inconsistency

Current status

The issue has now been resolved

Model registration should work as expected moving forward

To avoid similar issues and ensure smooth model registration:

• Use a strictly numeric version (for example: version: 1)
• If you leave the version blank, Azure ML will auto-increment it
• Ensure you are using the latest Azure ML CLI (az ml) or VS Code extension to pick up recent fixes.

Also please refer this

• Problem with models or model registration: https://docs.microsoft.com/azure/machine-learning/concept-model-management-and-deployment#register-package-and-deploy-models-from-anywhere
• Azure status page: https://azure.microsoft.com/status

I Hope this helps. Do let me know if you have any further queries.

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