Azure Cognitive Services Account Stuck in Failed State — Delete/Purge Returns InternalServerError

Question

Azure Cognitive Services Account Stuck in Failed State — Delete/Purge Returns InternalServerError

farhan kavi 20

I am experiencing an issue with an Azure AI Services (Cognitive Services) that was created in Korea Central. The account provisioning failed and is currently stuck in the Failed.

I ran "adz down" successfully which removed the application resources but the failed Cognitive Services account remains and cannot be deleted. Attempts to delete or purge the account using Azure CLI consistently return:

                      InternalServerError: Encountered internal server error. Please try again
```I also attempted to recover the account, but Azure returned:

```yaml
                      CanNotRestoreAnActiveResource: Could not restore an active account
```delete from portal.azure.com - Resource group(rg-dev-trail) - delete resource group, azure returning:

```yaml
                       (Code: ResourceGroupDeletionTimeout) Encountered internal server error. Please try again. (Code: InternalServerError).
```Tracking ID:  '0ee63a97-32b9-4e56-8077-f9c9fd693781'

Resource ID:  /subscriptions/<redacted>/resourceGroups/rg-dev-trail/providers/Microsoft.CognitiveServices/accounts/ai-account-bjz4aegnph2sg

Ganesh Gurram 7,405 Reputation points Microsoft External Staff Moderator

2026-09-01T01:23:16.94+00:00

Hi @farhan kavi,

Thank you for posting your query on the Microsoft Q&A forum.

We are currently reviewing the issue with our PG team. We will provide an update soon.
farhan kavi 20 Reputation points

2026-09-01T07:37:01.4033333+00:00

Hi @Ganesh Gurram i would like to inform that RG was deleted successfully, thanks for your support
Ganesh Gurram 7,405 Reputation points Microsoft External Staff Moderator

2026-09-01T07:41:05.9266667+00:00

@farhan kavi - Glad to hear that your issue has been resolved.

If you found the solution helpful, please consider clicking "Accept Answer" and selecting "Yes" for "Was this answer helpful, for the below answer". This helps other community members who may encounter the same issue and improves the visibility of the solution.

Thank you!

Answer accepted by question author

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Your answer

Ganesh Gurram 7,405 Reputation points Microsoft External Staff Moderator

2026-09-01T01:23:16.94+00:00

Hi @farhan kavi,

Thank you for posting your query on the Microsoft Q&A forum.

We are currently reviewing the issue with our PG team. We will provide an update soon.
farhan kavi 20 Reputation points

2026-09-01T07:37:01.4033333+00:00

Hi @Ganesh Gurram i would like to inform that RG was deleted successfully, thanks for your support
Ganesh Gurram 7,405 Reputation points Microsoft External Staff Moderator

2026-09-01T07:41:05.9266667+00:00

@farhan kavi - Glad to hear that your issue has been resolved.

If you found the solution helpful, please consider clicking "Accept Answer" and selecting "Yes" for "Was this answer helpful, for the below answer". This helps other community members who may encounter the same issue and improves the visibility of the solution.

Thank you!

Answer 1

Hi @farhan kavi

We have checked with the PG team, and below is the response we received from them:

"The account cannot be deleted because its backing AML hub has a child AI project stuck in Active state. The CogSvc RP's delete path calls AML RP to soft-delete the backing hub; AML RP rejects that call with a 400 ValidationError, and the CogSvc RP client converts any non-success downstream status into a hardcoded InternalServerError exception that goes unhandled — which is the 500 the customer sees. The 500 is a masked 400; it is not a transient platform fault, so retrying can never succeed.

We have manually cleaned Hub, please retry the operation."

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

If this answers your query, please do click "Accept Answer" and "Yes" for was this answer helpful.

Thank you!