How to Lock and Unlock the Function (Fn) Key in Windows 11/10

Keys with a Fn key Where F-lock provide two sets of commands for many keys on a keyboard. This includes the top row of standard function keys (F1–F12). In this article, we will show you the methods on how PC users can Lock and unlock the function key (Fn) on Windows 11 or Windows 10 computers.

Note above in the image that the location of the fn key may vary slightly on PCs:

  1. Function keys (f1 to f12)

  2. Fn key

How to Lock and Unlock the Function (Fn) Key in Windows 11/10

the Fn key is the abbreviation of a function – this particular key allows PC users to access the second assignment of a key. By pressing the Fn key and other function keys like F1-F12, you can perform additional functions related to these keys.

You can lock and unlock the Function (Fn) key in Windows 11/10 in two ways:

  1. On the keyboard
  2. In BIOS/UEFI settings

Let’s take a look at the description of these methods.

1]Lock and unlock (Fn) function key on keypad

The fastest way to lock or unlock the Fn key on a Windows 11/10 PC is on the keyboard itself. If the function lock key is present on your keyboard, just press the key and the Fn key to lock the Fn keys. To unlock the Fn lock, repeat the action again.

The Fn lock key is represented by a lock symbol and located below the Esc (Escape) key on most standard keyboards. Although some keyboards don’t have the Fn key at all.

2]Lock and unlock (Fn) function key via BIOS/UEFI settings

Lock and unlock function key (Fn) via BIOS/UEFI settings

BIOS/UEFI settings is another place where you can lock and unlock the Function (Fn) key in Windows 11/10. Keep in mind that locking the Fn key using this method turns dual-purpose keys into single-purpose keys and requires your system to have advanced BIOS options.

To lock and unlock the Function (Fn) key via BIOS/UEFI settings, follow these steps:

On modern Dell laptops, you need to disable the Fn lock key by clicking Advanced > Function Key Behavior. On the all-in-one multimedia keyboard, to enable FN lock, simply press the FN key and the caps lock key at the same time. To disable FN Lock, press the FN key and the Caps Lock key simultaneously again.

For more information on using the Fn key/F lock key/alternate command keys, see the Microsoft support article.

That’s all about how to lock and unlock the Function (Fn) key in Windows 11/10!

Similar item: Change the behavior of function keys in Dell laptops.

How do I disable the Fn key on my HP laptop Windows 11?

Press the f10 key to open the BIOS setup menu. Select the Advanced menu. Select the Device Setup menu. Press the right or left arrow key to select Enable or Disable the Fn key switch.

Related reading: Function (Fn) keys do not work on a laptop.

How to use the Fn key without pressing Fn?

To use the Fn key without pressing Fn, simply toggle the Fn Lock key on your keyboard. All you have to do is look on your keyboard and search for any key with a padlock symbol on it. Once you locate this key, press the Fn key and the Fn Lock key simultaneously. Now you will be able to use your Fn keys without having to press the Fn key to perform functions.