Azure custom vision training session stuck

Question

Azure custom vision training session stuck

Guy Barner 50

I'm using Custom Vision.

I've set a training session for 6 hours, and it's been running for 15 hours now.

I can't restart the session or do anything with it, just wait.

please advise.

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Pavankumar Purilla 11,395 Reputation points Microsoft External Staff Moderator

2025-09-09T12:35:11.9933333+00:00

Hi Guy Barner,
Could you please confirm the region where your Custom Vision resource is deployed? This will help us check if the issue is region-specific and investigate why your training job is stuck.
Guy Barner 50 Reputation points

2025-09-09T13:47:02.0933333+00:00

Thanks! It's in West Europe
Guy Barner 50 Reputation points

2025-09-09T18:05:28.9233333+00:00

Any idea? Going on now for 24h.

I really need a solution + starting to get worried about cost if this is actually running and not just stuck...
Pavankumar Purilla 11,395 Reputation points Microsoft External Staff Moderator

2025-09-11T03:04:20.8833333+00:00

Hi Guy Barner,
Could you please confirm whether the issue has been resolved? Once I have your confirmation, I will update my response accordingly. The PG team has resolved the issue.
Guy Barner 50 Reputation points

2025-09-11T03:16:02.2766667+00:00

It has NOT been resolved. I have access again after not having access for a day, but the training session is still stuck.
Aakash Kumar 5 Reputation points

2025-09-11T06:11:50.8833333+00:00

Hi @Pavankumar Purilla , I am encountering the same issue. My region is centralIndia and we have quite a few "quick training" pipelines running since yesterday on Custom Vision and they're stuck on the training screen. Typically training takes 20-45 minutes. This has been going on for >24 hours. Do let us know, if there is a quick resolution you can provide?
Pavankumar Purilla 11,395 Reputation points Microsoft External Staff Moderator

2025-09-11T09:10:29.6733333+00:00

Hi Guy Barner,
Could you please provide the requested details in a private message?
naoki_takashima 25 Reputation points

2025-09-11T16:30:10.0233333+00:00

Hi @Pavankumar Purilla , I'm encountering the same issue, but in entirely different regions - Japan East and South Central US. This suggests it might be a global problem rather than region-specific.

I posted details here before finding this thread:

https://free.blessedness.top/en-us/answers/questions/5551967/azure-custom-vision-training-stuck-not-completing

The issue affects object detection training specifically, while image classification works normally.
Pavankumar Purilla 11,395 Reputation points Microsoft External Staff Moderator

2025-09-12T02:33:14.0466667+00:00

Hi Guy Barner,Aakash Kumar, naoki_takashima,
We have reached out to our PG team and raised a support ticket on your behalf. Once we receive an update from them, we will share the information with you.Thank you for your patience.
naoki_takashima 25 Reputation points

2025-09-17T05:02:15.7733333+00:00

Hi @Pavankumar Purilla ,

Thank you for raising the support ticket with the PG team!

Could you share the current status? This training issue is blocking our experiments completely, so we need to prioritize this urgently. If creating a technical support ticket from our side would help expedite this, please let us know.

Thank you in advance.

Answer accepted by question author

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Pavankumar Purilla 11,395 Reputation points Microsoft External Staff Moderator

2025-09-09T12:35:11.9933333+00:00

Hi Guy Barner,
Could you please confirm the region where your Custom Vision resource is deployed? This will help us check if the issue is region-specific and investigate why your training job is stuck.
Guy Barner 50 Reputation points

2025-09-09T13:47:02.0933333+00:00

Thanks! It's in West Europe
Guy Barner 50 Reputation points

2025-09-09T18:05:28.9233333+00:00

Any idea? Going on now for 24h.

I really need a solution + starting to get worried about cost if this is actually running and not just stuck...
Pavankumar Purilla 11,395 Reputation points Microsoft External Staff Moderator

2025-09-11T03:04:20.8833333+00:00

Hi Guy Barner,
Could you please confirm whether the issue has been resolved? Once I have your confirmation, I will update my response accordingly. The PG team has resolved the issue.
Guy Barner 50 Reputation points

2025-09-11T03:16:02.2766667+00:00

It has NOT been resolved. I have access again after not having access for a day, but the training session is still stuck.
Aakash Kumar 5 Reputation points

2025-09-11T06:11:50.8833333+00:00

Hi @Pavankumar Purilla , I am encountering the same issue. My region is centralIndia and we have quite a few "quick training" pipelines running since yesterday on Custom Vision and they're stuck on the training screen. Typically training takes 20-45 minutes. This has been going on for >24 hours. Do let us know, if there is a quick resolution you can provide?
Pavankumar Purilla 11,395 Reputation points Microsoft External Staff Moderator

2025-09-11T09:10:29.6733333+00:00

Hi Guy Barner,
Could you please provide the requested details in a private message?
naoki_takashima 25 Reputation points

2025-09-11T16:30:10.0233333+00:00

Hi @Pavankumar Purilla , I'm encountering the same issue, but in entirely different regions - Japan East and South Central US. This suggests it might be a global problem rather than region-specific.

I posted details here before finding this thread:

https://free.blessedness.top/en-us/answers/questions/5551967/azure-custom-vision-training-stuck-not-completing

The issue affects object detection training specifically, while image classification works normally.
Pavankumar Purilla 11,395 Reputation points Microsoft External Staff Moderator

2025-09-12T02:33:14.0466667+00:00

Hi Guy Barner,Aakash Kumar, naoki_takashima,
We have reached out to our PG team and raised a support ticket on your behalf. Once we receive an update from them, we will share the information with you.Thank you for your patience.
naoki_takashima 25 Reputation points

2025-09-17T05:02:15.7733333+00:00

Hi @Pavankumar Purilla ,

Thank you for raising the support ticket with the PG team!

Could you share the current status? This training issue is blocking our experiments completely, so we need to prioritize this urgently. If creating a technical support ticket from our side would help expedite this, please let us know.

Thank you in advance.

Answer 1

Pavankumar Purilla 11,395 Microsoft External Staff Moderator

Hi Guy Barner,
We sincerely apologize for the inconvenience this has caused. At this time, we are aware that several customers are reporting similar issues with the service.

We will be reaching out to our Product Group (PG) team for further investigation and will share an update with you as soon as we have more information. Thank you for your patience and understanding.

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Azure custom vision training session stuck

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