Home

Lock Fn Key Windows 11 Jun 2026

Here are the methods, ranked from the easiest to the most advanced.

If the methods above do not work, you must change the behavior deep in your computer's system settings. This works for almost all laptops.

Some keyboards expose Fn behavior via a registry key. This does not work for most integrated laptop keyboards , but for certain USB external ones:

Depending on your goal, "locking" the Fn key can mean two things:

This lets you override the physical labeling entirely.

How to turn off the Function Keys on my PC - Microsoft Learn

Many laptop manufacturers install proprietary software that controls keyboard functions in Windows 11.

Locking the key in Windows 11 allows you to toggle between two modes: using the F1–F12 keys for standard functions (like refreshing a page with F5) or for multimedia "hotkeys" (like adjusting volume or brightness).