Availability of "End-to-end TLS encryption" in Function App

Dev SS 80 Reputation points
2026-08-24T03:00:42.7833333+00:00

End-to-end TLS encryption setting doesn't appear in a part of my Function Apps.

All applications use the Premium V4 plan.

Does the availability of End-to-end TLS encryption in this case depend on an application's OS?

Linux : End-to-end TLS encryption is supported

Windows : End-to-end TLS encryption is not supported

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Azure Functions
Azure Functions

An Azure service that provides an event-driven serverless compute platform.


Answer accepted by question author
Siddhesh Desai 8,050 Reputation points Microsoft External Staff Moderator
2026-08-24T03:51:51.0233333+00:00

Hi @Dev SS

Thank you for reaching out to Microsoft Q&A.

I tried reproducing your issue on my and the End-to-End TLS encryption option is only visible in Azure Linux Function app and not in Windows Function by design.

Refer my results below:

For Windows Function: E2E option not visible:

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For Linux Function app its visible:

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So what you are seeing is by design for everyone using Function app.

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