topic Unable to Activate ML Model Endpoint in Data Science

Unable to Activate ML Model Endpoint

TerrenceMitchel — Tue, 21 Oct 2025 20:31:37 GMT

Have a simplified implementation of the Book Recommender ML Model using ALS. Model has one version, and i can get predicdtions from the Notebook used to create it.

In the Fabric UI I've tried to Activate the Endpoint for Version 1, but the Status results in Failed after a few minutes of Activating Status. Searching to find where the logs are has resulted in vauge and unuseful steps.

How can I see what went wrong with the Endpoint Activation?

Thanks.

Re: Unable to Activate ML Model Endpoint

TerrenceMitchel — Tue, 21 Oct 2025 20:52:33 GMT

FWIW, I did happen across this paragraph in some documentation... perhaps the PySpark ALS simply isn't supported?

Limitations

Endpoints are currently available for a limited set of ML model flavors, including Keras, LightGBM, Sklearn, and XGBoost.
Endpoints currently aren't available for models with tensor-based schemas or no schemas.
Endpoints currently aren't available for models with dependencies on private or internal packages.

Re: Unable to Activate ML Model Endpoint

v-saisrao-msft — Wed, 22 Oct 2025 09:57:02 GMT

Hi TerrenceMitchel,

The reason you’re unable to activate the model endpoint is because of a current limitation in Microsoft Fabric (Preview).

For reference, please check the official documentation below:

Serve real-time predictions with ML model endpoints (Preview) - Microsoft Fabric | Microsoft Learn

Solved: Can not activate version endpoint ML - Microsoft Fabric Community

Thank you.

Re: Unable to Activate ML Model Endpoint

TerrenceMitchel — Wed, 22 Oct 2025 11:58:39 GMT

Thanks for confirming.