Question 386271 in Azure Question posted in
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Function App: Azure.Storage.Blobs: Value cannot be null

I have published a function from Visual Studio 22 but I get two errors. I go to the configuration in Function App to see the value of AzureWebJobsStorage. In this place I saw AzureWebJobsStorage ‘s value and It is same connectionString of my Visual Studio solution (the string I get from Storage Account > Access keys).

I don’t know why AzureWebJobsStorage return a fail: Microsoft.Azure.WebJobs.Script: Error configuring services in an external startup class. Azure.Storage.Blobs: Value cannot be null. (Parameter ‘connectionString’).enter image description here

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  1. Chosen as BEST ANSWER
    0

    The solution: you have to go to Function Api > Environment variables > App settings and add the variables that we have in the project in the local.settings.json file.

    Thank you very much for the help and sorry for the absence.


  2. 0

    Function App: Azure.Storage.Blobs: Value cannot be null

    The above error message indicates that there might be a problem with how connection string is being utilized in code and the AzureWebJobsStorage connection string in your Azure Functions configuration.

    • Verify that the AzureWebJobsStorage connection string is correctly set in your Azure Functions configuration.
    • The connection string is copied correctly from your Storage Account > Access keys into the Azure Functions configuration like below:

    enter image description here

    • Must be add storage connection string in function app environment variables.

    enter image description here

    • After added the appsetting need to redeploy the function into portal.

    • The key must be same in local and portal configuration of storage connection string.

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