AZFD0002: Value of AzureWebJobsStorage app setting is invalid.

This event occurs when the value of the AzureWebJobsStorage app setting is set to either an invalid Azure Storage account connection string or to a Key Vault reference.

Value
Event ID AZFD0002
Severity Error

Event description

The AzureWebJobsStorage app setting is used to store the connection string of the storage account associated with the function app. The Azure Functions runtime uses this connection for core behaviors such as coordinating singleton execution of timer triggers, default app key storage, and storing diagnostic events. This app setting needs to be set to a valid connection string.

For more information, see AzureWebJobsStorage.

How to resolve the event

Update the value of the AzureWebJobsStorage app setting on your function app with a valid storage account connection string. For more information, see Troubleshoot error: "Azure Functions Runtime is unreachable".

When to suppress the event

You should suppress this event when your function app uses an Azure Key Vault reference in the AzureWebjobsStorage app setting instead of a connection string. For more information, see Source application settings from Key Vault