64-bit support is now available for App Service Free sites on Windows

Newer runtimes, including Node.js 24 and Node.js 26, no longer provide 32-bit builds. To help you get started with these runtimes without moving to a paid plan just for 64-bit support, Azure App Service now supports 64-bit (x64) applications on Windows sites in the Free (F1) tier.

Try your x64 app on the Free tier

This removes the Free tier’s 32-bit process restriction as a barrier to trying newer runtimes. It also makes room for applications that depend on 64-bit native libraries and lets you test with the same process architecture you intend to use in a paid Windows App Service plan.

Whether you are learning App Service, building a proof of concept, or checking an application’s compatibility, you now have more flexibility to use the Free tier.

What stays the same

This update adds support for a process architecture; it does not increase the Free tier’s memory, CPU, or other resource quotas. Free-tier apps still run on shared compute and remain subject to the existing App Service limits.

The change applies to Windows Free (F1) sites only. Linux sites already run exclusively on 64-bit, and Windows sites in the Shared (D1) tier already support both 32-bit and 64-bit processes.

Learn more about App Service plans to choose the right tier for your application.