●Change8

Migrating to Azure Functions v4.1049.100

Version v4.1049.100 introduces 2 breaking changes. This guide details how to update your code.

Released: 4/10/2026

2
Breaking Changes
2
Migration Steps
1
Affected Symbols

⚠️ Check Your Code

If you use any of these symbols, you need to read this guide:

IWorkerRuntimeResolver

Breaking Changes

●Issue #1

Migrated to .NET 10. Users targeting older .NET versions may need to update their runtime configuration.

●Issue #2

Removed self-contained=true from linux artifacts. This might affect deployment strategies relying on self-contained binaries for Linux.

Migration Steps

  1. 1
    Review deployment process for Linux artifacts, as self-contained=true is no longer used.
  2. 2
    Ensure compatibility with .NET 10 runtime.

Release Summary

This release introduces a refactoring for worker runtime resolution and fixes a bug related to custom handlers and extension bundles, while migrating the underlying runtime to .NET 10.

Need More Details?

View the full release notes and all changes for Azure Functions v4.1049.100.

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