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Azure App Service Certificate - File Download Error on "Download as a Certificate"

Jordan Elypse 20 Reputation points
2025-07-02T01:56:40.4+00:00

I am receiving "File Download Error" when trying to export my Azure App Service Certificate via the Azure Portal.

Steps:

  1. Access the App Service Certificate
  2. Click "Export Certificate"
  3. Download certificate from Key Value, click "Open Key Vault Secret".
  4. Click on Current Certificate Version.
  5. Certificate appears, click "Download as a Certificate".
  6. Following Error appears:
  7. User's image I have performed this task for the past 5 years with no issues. No permissions have changed that I am aware of. I am not a Powershell user so that workaround is problematic. I would like this Download button to function as expected.
Azure App Service
Azure App Service
Azure App Service is a service used to create and deploy scalable, mission-critical web apps.
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Accepted answer
  1. Grmacjon-MSFT 19,381 Reputation points Moderator
    2025-07-03T20:23:34.1166667+00:00

    Hello @Jordan Elypse thanks for the update. This was a bug but it now fixed by app service team. Please try exporting your Azure App Service Certificate and let us know if you are still having the original issue

    Thanks,

    Grace

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  1. Shree Hima Bindu Maganti 5,165 Reputation points Microsoft External Staff Moderator
    2025-07-02T12:19:44.1166667+00:00

    Hi @Jordan Elypse
    It appears you are experiencing a "File Download Error" when exporting your Azure App Service Certificate. This could be due to various reasons, such as recent changes in the Azure environment or configuration settings.

    • Make sure you have the right permissions to access and export the certificate from the Key Vault, as these can sometimes change.
    • Try a different web browser or clear your current browser's cache, as this can sometimes resolve download problems.
    • Double-check that the certificate version you’re trying to download is the current and active version. If it's expired or not available, downloading it might result in an error.
    • If possible, consider exporting the certificate using Azure CLI or Cloud Shell, which may offer an alternative to PowerShell.
    az keyvault certificate download --vault-name <YourKeyVaultName> --name <YourCertificateName> --file <PathToOutputFile>

     Export an App Service certificate

    Troubleshoot domain and TLS/SSL certificate problems in Azure App Service
    Let me know if you have any further assistances needed.

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