Azure Functions - No App Host Keys and Cannot Create

Question

Azure Functions - No App Host Keys and Cannot Create

Rae Goodhart 11 Microsoft Employee

Hello,

I recently found that one of my Azure Functions instances does not have any Host keys listed at all in the App Keys blade of the portal - not even a default or master key. When I try to create any key, it fails with "Failed to create XXX: Encountered an error (InternalServerError) from host runtime."

Any ideas on how to resolve would be greatly appreciated!

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Answer 1

Pranay 291

@Rae Goodhart
Hi

Could you pls check if the property is present in configuration: AzureWebJobsStorage ( it’s a link for your blob storage). Might be one of the reasons the key is not generated.

You can refer: https://learn.microsoft.com/en-us/azure/azure-functions/functions-how-to-use-azure-function-app-settings?tabs=portal

If that’s available.

Could you try to create a new functions app and check if the keys are being created?

Please update me the answer.

MikeUrnun 9,777 Reputation points Moderator

2021-04-11T23:26:19.267+00:00

@Rae Goodhart Yes, per the answer above, please ensure all required App Settings are there in your setup, especially: AzureWebJobsDashboard and AzureWebJobsStorage. I found the following discussion insightful: arm template deployed function app has no host keys and throws errors
Ademilua, Tolulope Emmanuel, TLL AFS 0 Reputation points

2024-04-15T11:56:21.3566667+00:00

This issue can happen also when the storage is full. To solve read further : The backup files for the repository are stored within the storage account specified in the AzureWebJobsStorage application setting. You can locate them within a container named azure-webjobs-secrets, housed in a subfolder bearing the identical name as your function app.

To address this issue, remove one or more of the repository backups (host.snapshot.<DATE>.json) from the azure-webjobs-secrets<FUNCTION_APP_NAME> container within the storage account utilized by your function app. This error is described here: AZFD0007: Repository has more than 10 nondecryptable secrets backups - Azure Functions | Microsoft Learn and can be fixed

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Azure Functions - No App Host Keys and Cannot Create

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