Unable to delete or disable an azure function in Azure function App(Consumption Plan)

Question

Unable to delete or disable an azure function in Azure function App(Consumption Plan)

Vivek Kumar 45

Hi everyone,

I created the Azure function app using the consumption plan and then added a function inside it using the Azure portal. However, I'm facing an issue where I'm unable to delete or disable the function. Both options are visible in the pane but appear faded and are not clickable.
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I can disable the function by creating an app setting(environment variable) in the format AzureWebJobs.<FUNCTION_NAME>.Disabled and setting it to true. But still Enable and Delete are disabled after creating this setting.

**Note: We can only disable a function if the function app is running. Not sure about Delete though (I have tried with both after starting and stopping the app)
Also, going through previous posts, I noticed that the line "Your app is currently in read-only mode because you are running from a package file." this issue is not present on my app.

Khadeer Ali 5,990 Reputation points Microsoft External Staff Moderator

2025-02-18T16:44:45.97+00:00

@Vivek Kumar ,

Thanks for reaching out.

To disable a function, you can create an app setting in the format AzureWebJobs.<FUNCTION_NAME>.Disabled and set it to true, which you’ve already tried. However, this may not make the "Enable" and "Delete" options clickable in the Azure portal.

For deleting a function, you may need to remove the function from your code, enable the "Remove additional files at destination" option in your deployment profile, and redeploy the app. This will ensure that any residual files, including the function you're trying to delete, are properly cleaned up.

Make sure your function app is not in read-only mode, which can occur if it is running from a package file, although you’ve mentioned that this is not the case in your app.

Additionally, check for any role-based access control (RBAC) issues or policy violations that might be preventing you from disabling or deleting the function.
Vivek Kumar 45 Reputation points

2025-02-18T17:09:05.2033333+00:00
Hi Khadeer,

I have already mentioned the app setting method in my question. It works but doesn't enable those two buttons in the UI.

"Remove additional files at destination" I think this option is available when you deploy from VS code a created function through portal only. Also please tell where can I find the deployment profile.

How do I check the read- only mode, can you please point specifically because I can see the mode in function app settings. Please add screenshots if possible.

I have created the resource group and function app also, so access related issue should not be there.
Khadeer Ali 5,990 Reputation points Microsoft External Staff Moderator

2025-02-18T18:25:59.6+00:00
@Vivek Kumar

For the Remove additional files at destination" & Deployment Profile, you won't find this option if you deploy through Azure Portal.

Even though you don’t see the "Your app is in read-only mode because you are running from a package file" message, let’s verify explicitly.

How to check?

Go to the Azure Portal.

Navigate to your Function App.

In the left-side menu, click on Configuration.

Go to Environment Variables menu

Under the App settings tab, check if you have a setting called: WEBSITE_RUN_FROM_PACKAGE

If this setting is present and set to 1 or a URL, your function is running from a package and is in read-only mode.

If this setting is not present, then your function app should be writable.
Below is the snippet where you could find the option Since you created both the Resource Group and Function App, access restrictions are unlikely. However, if you’re using an organization-managed Azure Active Directory (AAD), there might be policy restrictions enforced at the tenant level. To verify your role:

In the Azure Portal, go to your Function App.

In the left panel, go to Access Control (IAM) → Click Role Assignments.

Make sure your user account has at least Contributor or Owner role.
Khadeer Ali 5,990 Reputation points Microsoft External Staff Moderator

2025-02-19T17:49:16.81+00:00

@Vivek Kumar ,

Did you get a chance to try the previous work around?
Vivek Kumar 45 Reputation points

2025-02-20T05:16:57.6+00:00

Hi Khadeer,
I checked the Environment Variables menu, WEBSITE_RUN_FROM_PACKAGE is not present there.
In the Access Control (IAM) of function app, I have the contributor role.

Also yesterday, I deployed the function through VS code and yet the buttons are disabled.
Can you tell me where can I find the Remove additional files at destination & Deployment Profile options
Khadeer Ali 5,990 Reputation points Microsoft External Staff Moderator

2025-02-25T15:18:10.47+00:00

@Vivek Kumar ,

Just following up again to see if you were able to resolve the issue or if there's anything else I can assist you with.

1 answer

Your answer

Khadeer Ali 5,990 Reputation points Microsoft External Staff Moderator

2025-02-18T16:44:45.97+00:00

@Vivek Kumar ,

Thanks for reaching out.

To disable a function, you can create an app setting in the format AzureWebJobs.<FUNCTION_NAME>.Disabled and set it to true, which you’ve already tried. However, this may not make the "Enable" and "Delete" options clickable in the Azure portal.

For deleting a function, you may need to remove the function from your code, enable the "Remove additional files at destination" option in your deployment profile, and redeploy the app. This will ensure that any residual files, including the function you're trying to delete, are properly cleaned up.

Make sure your function app is not in read-only mode, which can occur if it is running from a package file, although you’ve mentioned that this is not the case in your app.

Additionally, check for any role-based access control (RBAC) issues or policy violations that might be preventing you from disabling or deleting the function.
Vivek Kumar 45 Reputation points

2025-02-18T17:09:05.2033333+00:00

Hi Khadeer,

I have already mentioned the app setting method in my question. It works but doesn't enable those two buttons in the UI.

"Remove additional files at destination" I think this option is available when you deploy from VS code a created function through portal only. Also please tell where can I find the deployment profile.

How do I check the read- only mode, can you please point specifically because I can see the mode in function app settings. Please add screenshots if possible.

I have created the resource group and function app also, so access related issue should not be there.
Khadeer Ali 5,990 Reputation points Microsoft External Staff Moderator

2025-02-18T18:25:59.6+00:00

@Vivek Kumar

For the Remove additional files at destination" & Deployment Profile, you won't find this option if you deploy through Azure Portal.

Even though you don’t see the "Your app is in read-only mode because you are running from a package file" message, let’s verify explicitly.

How to check?

Go to the Azure Portal.

Navigate to your Function App.

In the left-side menu, click on Configuration.

Go to Environment Variables menu

Under the App settings tab, check if you have a setting called: WEBSITE_RUN_FROM_PACKAGE

If this setting is present and set to 1 or a URL, your function is running from a package and is in read-only mode.

If this setting is not present, then your function app should be writable.
Below is the snippet where you could find the option Since you created both the Resource Group and Function App, access restrictions are unlikely. However, if you’re using an organization-managed Azure Active Directory (AAD), there might be policy restrictions enforced at the tenant level. To verify your role:

In the Azure Portal, go to your Function App.

In the left panel, go to Access Control (IAM) → Click Role Assignments.

Make sure your user account has at least Contributor or Owner role.
Khadeer Ali 5,990 Reputation points Microsoft External Staff Moderator

2025-02-19T17:49:16.81+00:00

@Vivek Kumar ,

Did you get a chance to try the previous work around?
Vivek Kumar 45 Reputation points

2025-02-20T05:16:57.6+00:00

Hi Khadeer,
I checked the Environment Variables menu, WEBSITE_RUN_FROM_PACKAGE is not present there.
In the Access Control (IAM) of function app, I have the contributor role.

Also yesterday, I deployed the function through VS code and yet the buttons are disabled.
Can you tell me where can I find the Remove additional files at destination & Deployment Profile options
Khadeer Ali 5,990 Reputation points Microsoft External Staff Moderator

2025-02-25T15:18:10.47+00:00

@Vivek Kumar ,

Just following up again to see if you were able to resolve the issue or if there's anything else I can assist you with.

Answer 1

@Vivek Kumar ,

Thanks for your response. Since WEBSITE_RUN_FROM_PACKAGE is not present and you already have the Contributor role, let’s explore alternative ways to delete the function and troubleshoot the disabled buttons further.

Deleting Function from Function App

You can delete the function using either the Azure REST API or Azure CLI:

Using REST API:

DELETE https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Web/sites/{name}/functions/{functionName}?api-version=2024-04-01

Replace {subscriptionId}, {resourceGroupName}, {name}, and {functionName} with the correct values.

Using Azure CLI:

az functionapp function delete --function-name <FunctionName> --name <FunctionAppName> --resource-group <ResourceGroupName>

Reference :

https://learn.microsoft.com/en-us/cli/azure/functionapp/function?view=azure-cli-latest#az-functionapp-function-delete
https://learn.microsoft.com/en-us/rest/api/appservice/web-apps/delete-function?view=rest-appservice-2024-04-01#code-try-0

Checking "Remove Additional Files at Destination" & Deployment Profile

Since you deployed via VS Code, this setting is not directly available. However, in Visual Studio, you can find it in the Publish Profile:

Open Visual Studio.
Go to Solution Explorer → Right-click on your Function App project → Click Publish.
Under Deployment Settings, look for "Remove additional files at destination" and enable it before redeploying.

Since you used VS Code, you may need to manually clean up the function files using Kudu or Azure CLI before redeploying.

Why are the Delete & Disable Buttons Disabled?

This seems to be an issue with RBAC roles or permissions. Can you try the following and let us know if the issue persists?

Try adding the Website Contributor role and check whether the "Disable" and "Delete" buttons become enabled. If the issue persists, try removing the Website Contributor role.
Try creating a custom role using the following permissions:
- microsoft.web/sites/functions/delete
- microsoft.web/sites/functions/action
- microsoft.web/sites/functions/write

Let me know how it goes or if you need further assistance!

Khadeer Ali 5,990 Reputation points Microsoft External Staff Moderator

2025-02-24T07:44:28.3633333+00:00

@Vivek Kumar ,

Just want to check if you get a chance to check the above work arounds?
Vivek Kumar 45 Reputation points

2025-02-25T18:33:55.2033333+00:00

Hi Khadeer,
I still have to try these, i will update the status, once I try.
I remember vaguely, 2 years back i was using the functions(V1), deploying through vs code, and i was able to disable and delete from UI, that process is easy. That's why i am insisting on enabling these options on UI
Shireesha Eeraboina 3,435 Reputation points Microsoft External Staff Moderator

2025-02-27T08:09:49.4533333+00:00

Hi Vivek Kumar,

Could you please share any updates on this? If you have any questions, feel free to ask them here.

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Unable to delete or disable an azure function in Azure function App(Consumption Plan)

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