Suddenly the Web App does not appear anywhere in the Azure Portal, and no logs related to deletion in activity logs

Question

Suddenly the Web App does not appear anywhere in the Azure Portal, and no logs related to deletion in activity logs

Vikas Sharma 5

Suddenly the Web App does not appear anywhere in the Azure Portal, including:

Resource Group view
App Services list
All resources

However, the Web App is still exists and web jobs are running on it.

The Kudu/SCM endpoint works

The resource also appears when using Azure CLI:

But ARM API operations fail with: (ResourceNotFound)

Activity Logs show no delete or move operations for this Web App.

Impact

Cannot deploy code through pipelines (deployment fails with resource doesn't exist).
Cannot manage configuration, settings, scaling, or diagnostics.
Cannot access the resource from the Azure Portal.

Expectation

We need Microsoft to:

Investigate ARM control-plane inconsistency for this Web App.

Recover the missing Microsoft.Web/sites resource in ARM.

Restore visibility and management capability in the portal.

Confirm if there was any backend failure, corruption, or accidental unlinking of the resource metadata.

Vikas Sharma 5 Reputation points

2025-11-15T07:24:04.3166667+00:00
Thank you for the guidance.

We checked the deleted resources as suggested using: Get-AzDeletedWebApp

However, the Web App does not appear in the deleted list.

Current Situation

The Web App is still running normally.

The SCM/Kudu endpoint works: https://<>.scm.azurewebsites.net/

Azure CLI shows the Web App in the subscription: az webapp list --query "[?contains(name,'')].{name:name, rg:resourceGroup}"

But ARM operations fail with: ResourceNotFound: The Resource 'Microsoft.Web/sites/' under resource group was not found.

The Web App does not appear in Azure Portal under any view.

Activity Logs show no delete or move operations.

The resource also does not appear in the deleted Web Apps list.

Summary
The Web App: Exists and runs in compute plane
**Does not exist in ARM control plane** **Is not marked as deleted** **Cannot be managed or deployed to**
This appears to be an inconsistency or corruption in the ARM metadata for this Web App.
Request
We request Microsoft Support to: Investigate control-plane inconsistency for this App Service instance. Restore the Microsoft.Web/sites resource entry in ARM.

Recover portal visibility and deployment capability.
Summary
The Web App:

Exists and runs in compute plane

Does not exist in ARM control plane

Is not marked as deleted

Cannot be managed or deployed to

This appears to be an inconsistency or corruption in the ARM metadata for this Web App.
Request
We request Microsoft Support to:

Investigate control-plane inconsistency for this App Service instance.

Restore the Microsoft.Web/sites resource entry in ARM.

Recover portal visibility and deployment capability.
Vikas Sharma 5 Reputation points

2025-11-17T04:23:17.5633333+00:00

Please do provide steps about how we can contact Microsoft support as advised in the answer.
RAMAMURTHY MAKARAPU 1,125 Reputation points Microsoft External Staff Moderator

2025-11-18T07:23:09.4533333+00:00
Hi @vikas sharma ,
Thanks for your updates and issue looks like you’re running into a classic control-plane vs. data-plane mismatch in Azure App Service.

The compute layer (data plane) is actually fine your app and Kudu are running normally and can still serve requests. But the ARM control plane has essentially “lost” the Microsoft.Web/sites/gminspectionapistaging resource. It doesn’t show up in the Portal, ARM, or Resource Explorer, and any ARM calls fail with ResourceNotFound.

Since there’s no delete operation in the Activity Log and the app isn’t in soft delete, this usually points to some kind of metadata inconsistency or a backend indexing issue within ARM.

I’ve put together a practical triage and escalation guide you can use right away, along with a ready-to-paste Support ticket description that includes all the evidence Microsoft Support typically needs to re-link the compute instance back to ARM.
Immediately what you should do is

Until the ARM issue is fixed, avoid doing the following:

Don’t stop or restart the Web App

Don’t scale up/down or scale in/out

Don’t do slot swaps or push config changes through pipelines

Any of these actions could disconnect the currently running instance, and since ARM can’t “see” the resource, you wouldn’t be able to bring it back.
Back up anything you can from the running instance (via Kudu)

Download site content

Use Kudu at: https://gminspectionapistaging.scm.azurewebsites.net/DebugConsole

Download:

For Linux: /home/site/wwwroot

For Windows: D:\home\site\wwwroot

Or download everything as a ZIP directly: https://gminspectionapistaging.scm.azurewebsites.net/api/zip/site/wwwroot

Capture an environment snapshot (This contains many app settings exposed as environment variables.)

https://gminspectionapistaging.scm.azurewebsites.net/api/environment

https://gminspectionapistaging.scm.azurewebsites.net/api/diagnostics/dump (ZIP file)

Save any outbound dependency or diagnostic info If you need logs to help with rollback or analysis:

Kudu > Process Explorer

Kudu > Log files

For Linux containers > Docker logs

Quick cross-checks (sometimes reveal a hidden state)

These do not “fix” the issue but can confirm the scope of the control-plane gap.

A) Azure Resource Graph (ARG)

Run either from Azure Cloud Shell or local CLI:

az graph query -q " resources | where type =~ 'microsoft.web/sites' | where name =~ 'gminspectionapistaging' | project id, name, resourceGroup, location, subscriptionId, tags"

If empty: the ARM graph also does not see it (consistent with your symptoms).

B) Try direct ARM GET with az rest (bypasses command wrappers)

Replace with your subscription & RG (if you know it). Even if RG is wrong, note the x-ms-correlation-request-id from the failure.

SUB='<subscription-id>' RG='<expected-resource-group>' SITE='gminspectionapistaging' az rest --method get \ --uri "https://management.azure.com/subscriptions/$SUB/resourceGroups/$RG/providers/Microsoft.Web/sites/$SITE?api-version=2023-12-01"

If you get ResourceNotFound, copy response headers (correlation IDs help support pinpoint the failing backend ring/stamp).

C) Resource Explorer (control-plane)

https://resources.azure.com/ > expand to your subscription → Resource Group → Microsoft.Web/sites (You already checked keep a screenshot showing it’s missing.)

D) Confirm tenant/subscription context

Ensure you’re in the same Azure AD tenant & subscription where the app was originally created. (You noted you are Subscription Owner; this is to rule out cross-tenant edge cases.)

Orphaned metadata in ARM: the site’s control-plane document got unlinked from the subscription/RG but compute kept serving.

Catalog desync / stamp catalog issue: the App Service “stamp” hosting your site still has the worker instance & files, but the global ARM catalog no longer lists the resource.

Cross-subscription move that partially failed or backend incident that corrupted the resource’s registration.

Soft-delete / purge not recorded: rare, but your “Deleted Web Apps” check makes this unlikely.

These are backend-only fixable; customers can’t self-heal control-plane documents.

Could you please check these commands in this documentation will get to know issue

Reference :
https://learn.microsoft.com/en-us/cli/azure/webapp?view=azure-cli-latest#az-webapp-list
RAMAMURTHY MAKARAPU 1,125 Reputation points Microsoft External Staff Moderator

2025-12-04T00:21:47.2266667+00:00

Hi @vikas sharma ,

Our internal team has confirmed that the resource group was successfully added to ARM. Please let me know if your issue has been resolved.
Vikas Sharma 5 Reputation points

2025-12-04T05:24:13.8+00:00

Yes, it is showing now. Thank you.

Do we know the reason behind why it suddenly got disappeared without any action from our side?

2 answers

Your answer

Vikas Sharma 5 Reputation points

2025-11-15T07:24:04.3166667+00:00

Thank you for the guidance.

We checked the deleted resources as suggested using: Get-AzDeletedWebApp

However, the Web App does not appear in the deleted list.

Current Situation

The Web App is still running normally.

The SCM/Kudu endpoint works: https://<>.scm.azurewebsites.net/

Azure CLI shows the Web App in the subscription: az webapp list --query "[?contains(name,'')].{name:name, rg:resourceGroup}"

But ARM operations fail with: ResourceNotFound: The Resource 'Microsoft.Web/sites/' under resource group was not found.

The Web App does not appear in Azure Portal under any view.

Activity Logs show no delete or move operations.

The resource also does not appear in the deleted Web Apps list.

Summary
The Web App: Exists and runs in compute plane
**Does not exist in ARM control plane** **Is not marked as deleted** **Cannot be managed or deployed to**
This appears to be an inconsistency or corruption in the ARM metadata for this Web App.
Request
We request Microsoft Support to: Investigate control-plane inconsistency for this App Service instance. Restore the Microsoft.Web/sites resource entry in ARM.

Recover portal visibility and deployment capability.
Summary
The Web App:

Exists and runs in compute plane

Does not exist in ARM control plane

Is not marked as deleted

Cannot be managed or deployed to

This appears to be an inconsistency or corruption in the ARM metadata for this Web App.
Request
We request Microsoft Support to:

Investigate control-plane inconsistency for this App Service instance.

Restore the Microsoft.Web/sites resource entry in ARM.

Recover portal visibility and deployment capability.
Vikas Sharma 5 Reputation points

2025-11-17T04:23:17.5633333+00:00

Please do provide steps about how we can contact Microsoft support as advised in the answer.
RAMAMURTHY MAKARAPU 1,125 Reputation points Microsoft External Staff Moderator

2025-12-04T00:21:47.2266667+00:00

Hi @vikas sharma ,

Our internal team has confirmed that the resource group was successfully added to ARM. Please let me know if your issue has been resolved.
Vikas Sharma 5 Reputation points

2025-12-04T05:24:13.8+00:00

Yes, it is showing now. Thank you.

Do we know the reason behind why it suddenly got disappeared without any action from our side?

Answer 1

Hi @Vikas Sharma

I glad to hear that the issue is resolved thanks for your update, we’ve identified the exact reason.

A temporary backend database glitch occurred in the Azure cluster (scale unit) hosting your app. This caused the Azure Resource Manager (ARM) cache to become outdated, so the portal and management APIs could no longer “see” your web app — even though the app itself kept running perfectly (Kudu, website, webjobs all stayed up).

It was not triggered by anything you or your team did

We fixed it by manually refreshing the ARM cache for your app, and everything is now back in sync.

The issue is fully resolved, and extra safeguards have been added to prevent similar cache problems in the future.

Kindly let us know if the above helps or you need further assistance on this issue.

Please "upvote" if the information helped you. This will help us and others in the community as well.

Answer 2

It seems like you're facing an issue where your Web App is not visible in the Azure Portal, yet it appears to be functioning as web jobs are running, and the Kudu/SCM endpoint is accessible. This situation can occur due to inconsistencies in the Azure Resource Manager (ARM) control plane.

Here are some steps you can take to address this issue:

Check Deleted Resources: Use the Get-AzDeletedWebApp cmdlet to see if the web app has been marked as deleted in the subscription. If it appears there, you can restore it.
Review Activity Logs: Although you mentioned no deletion logs are present, ensure you are checking the activity logs thoroughly for any related operations that might provide clues.
Azure CLI: Since you can see the resource using Azure CLI, you might want to check if there are any discrepancies in the resource's metadata or configuration that could be causing this visibility issue.
Contact Support: If the above steps do not resolve the issue, it would be advisable to contact Microsoft support for further investigation into the ARM control-plane inconsistency. They can assist in recovering the missing resource and restoring its visibility in the portal.

This situation may require deeper investigation by Azure support to confirm if there was any backend failure or corruption affecting the resource's metadata.

References:

Vikas Sharma 5 Reputation points

2025-11-15T08:04:11.1133333+00:00

My Azure Web App (name: gminspectionapistaging) suddenly stopped appearing in Azure Portal.

Symptoms:

• The app still runs at https://gminspectionapistaging.azurewebsites.net/

• Kudu/SCM still works at https://gminspectionapistaging.scm.azurewebsites.net/

• The Web App does not appear in Portal, CLI (Get-AzWebApp), or Resource Explorer

• No "Delete Web App" logs appear in Activity Log

• I am Owner at subscription level

• Support Plan: Developer Support (linked correctly)

Troubleshooting done:

• Checked Activity Log → no delete event

• Checked with Get-AzWebApp → returns nothing

• Tried Get-AzDeletedWebApp → returns empty list

• Checked all resource groups in the subscription → app not found

• Confirmed no Azure Policy or Defender for Cloud initiated deletion

• Verified subscription + resource group not moved/deleted

Request:

Microsoft support engineer assistance to identify:

• Why the Web App disappeared from Azure Portal

• Whether the Web App metadata is corrupted in the backend

• Whether it can be restored or re-associated with the Resource Group

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Suddenly the Web App does not appear anywhere in the Azure Portal, and no logs related to deletion in activity logs

Impact

Expectation

Current Situation

Summary

Request

Summary

Request

2 answers

Your answer