Azure Static Web Apps apex custom domain stuck in Deleting after failed validation

Question

Azure Static Web Apps apex custom domain stuck in Deleting after failed validation

Guy Rosewarn 25

Hello,

Our apex domain unitedsupports.com.au is stuck in the Deleting state on the Azure Static Web App unitedsupports-new (East Asia, Free tier) after a failed custom-domain validation.

The initial portal add was intended to use TXT validation, but the custom-domain resource was created using CNAME validation and failed with:

“An unknown error has occurred while adding your custom domain. Please try again later.”

The domain has remained stuck since 12 August 2026. We have tried:

Deleting it in the Azure portal
az staticwebapp hostname delete
Direct ARM DELETE requests using supported API versions
Repeating the delete after Azure’s documented propagation window

The delete operations return 202 Accepted, but the resource never leaves Deleting. The existing subdomain new.unitedsupports.com.au remains Ready.

This is a zero-downtime migration, so the apex DNS record intentionally remains pointed at the current production website until Azure validates the replacement hostname and certificate. Removing the live A record is not an acceptable workaround.

Could the Static Web Apps product team please clear the stuck backend custom-domain binding so we can re-add the apex domain using dns-txt-token validation?

I can provide the subscription ID, resource ID, operation IDs and correlation IDs privately if required.

Thank you.

Aiden Pan 15 Reputation points

2026-08-13T01:25:49.8133333+00:00
My Azure Static Web App custom domain has been stuck in the Deleting state since August 12, 2026.

The ARM API still returns:

status: Deleting

errorMessage: An unknown error has occurred while adding your custom domain. Please try again later.

I have already attempted to remove the custom domain using Azure Portal, Azure CLI, ARM REST API, and Az PowerShell, but it remains stuck in Deleting.

I also tried deleting the parent Static Web App, but the deletion fails with:

ResourceOperationFailure: The resource operation completed with terminal provisioning state 'Failed'.

There are no resource locks.

This appears to be a stuck backend custom-domain association or provisioning state. Could someone from the Azure Static Web Apps team confirm whether this is a known backend issue and advise how it can be released?
Saritha Bandaru 665 Reputation points Microsoft External Staff Moderator

2026-08-13T02:01:49.9866667+00:00

Hello @Guy Rosewarn

Thank you for contacting Microsoft Support regarding the issue where the custom domain is stuck in the "Deleting" state.

We have started investigating the issue and are currently reviewing the configuration and backend status. We will keep you updated on our findings and share any recommendations or next steps as soon as possible.

If you have any additional details that may help with the investigation, please feel free to share them with us.

We appreciate your patience and understanding while we work on resolving this issue. Thanks

Answer accepted by question author

0 additional answers

Your answer

Aiden Pan 15 Reputation points

2026-08-13T01:25:49.8133333+00:00

My Azure Static Web App custom domain has been stuck in the Deleting state since August 12, 2026.

The ARM API still returns:

status: Deleting

errorMessage: An unknown error has occurred while adding your custom domain. Please try again later.

I have already attempted to remove the custom domain using Azure Portal, Azure CLI, ARM REST API, and Az PowerShell, but it remains stuck in Deleting.

I also tried deleting the parent Static Web App, but the deletion fails with:

ResourceOperationFailure: The resource operation completed with terminal provisioning state 'Failed'.

There are no resource locks.

This appears to be a stuck backend custom-domain association or provisioning state. Could someone from the Azure Static Web Apps team confirm whether this is a known backend issue and advise how it can be released?
Saritha Bandaru 665 Reputation points Microsoft External Staff Moderator

2026-08-13T02:01:49.9866667+00:00

Hello @Guy Rosewarn

Thank you for contacting Microsoft Support regarding the issue where the custom domain is stuck in the "Deleting" state.

We have started investigating the issue and are currently reviewing the configuration and backend status. We will keep you updated on our findings and share any recommendations or next steps as soon as possible.

If you have any additional details that may help with the investigation, please feel free to share them with us.

We appreciate your patience and understanding while we work on resolving this issue. Thanks

Answer 1

Thank you for your patience while we looked into this.

We have received confirmation that mitigation has been applied, and your custom domain issue should now be resolved. Could you please retry the operation and verify whether everything is working as expected?

If you are still experiencing any issues, please reply with an update and any relevant details. We will be happy to continue assisting you and investigate further if needed.

We look forward to hearing back from you.

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