The Delete key stops working more often than most keys, and in about half of cases nothing is actually broken. The key you are pressing may not be the key you think it is, an accessibility setting may be swallowing the press, or one app is capturing it. Work through the checks below in order; they run from the most likely and cheapest fix to the least likely.
First, check which key you mean
Two different keys erase text, and they are labeled inconsistently across keyboards:
| Key | What it does | Windows label | Mac label |
|---|---|---|---|
| Backspace | Erases the character to the left of the cursor | Backspace or ← | Delete (large key above Return) |
| Forward delete | Erases the character to the right of the cursor | Delete or Del | ⌦ on full-size keyboards, or Fn+Delete on laptops |
If you are on a MacBook and pressing the big Delete key expecting it to erase forward, it is working correctly: it is Backspace. Hold Fn and press Delete to forward delete. Read Where is the Delete key if you are not sure which physical key you have.
Test the key
Use the keyboard tester above. Press Delete and watch for the key to light up.
- It registers: the hardware and driver are fine. The problem is software: an app binding, an accessibility setting, or a remap. Go to the software fixes.
- It does not register but every other key does: the key itself or its switch is the problem. Skip to the hardware fixes.
- Several keys do not register: read Some keys not working, which diagnoses by pattern.
Software fixes
1. Turn off Filter Keys (Windows)
Filter Keys ignores brief or repeated presses and is easy to switch on by accident, because holding the right Shift key for eight seconds enables it.
- Open Settings → Accessibility → Keyboard.
- Turn Filter Keys off.
- While you are there, turn Sticky Keys off too unless you use it.
Test Delete again.
2. Check Slow Keys (Mac)
The Mac equivalent is Slow Keys, which requires a key to be held before it registers.
- Open System Settings → Accessibility → Keyboard.
- Turn Slow Keys off.
3. Test in a plain text editor
Open Notepad (Windows) or TextEdit (Mac), type a sentence, put the cursor in the middle and press Delete. If it works there, the app you were using is the problem. Common culprits:
- Remote desktop and virtual machine windows that pass Delete to the remote system.
- Games and game launchers that bind Delete to an action.
- Browser extensions that intercept keyboard shortcuts.
- Excel, where Delete clears cell contents rather than editing text unless you are inside the cell.
4. Look for a remap
If you or a previous user installed a remapping tool, Delete may have been reassigned. Check PowerToys Keyboard Manager on Windows, or Karabiner-Elements on a Mac, and remove any rule that mentions Delete. Some gaming keyboards ship with software (Razer Synapse, Logitech G Hub, Corsair iCUE) that can rebind keys per profile; switch to the default profile.
5. Reinstall the keyboard driver (Windows)
- Right-click Start → Device Manager.
- Expand Keyboards, right-click your keyboard and choose Uninstall device.
- Restart. Windows reinstalls the driver automatically.
On a Mac there is no driver to reinstall. Restarting clears most transient input problems.
6. Check the keyboard layout
On some layouts, especially after switching language, Delete behaves differently or the key you expect is mapped elsewhere. Press Win+Space on Windows or check the input menu in the Mac menu bar to confirm you are on the layout you expect. If the wrong layout is the issue, Keyboard typing wrong characters walks through switching it.
Hardware fixes
7. Clean under the key
Crumbs and dust are the most common cause of a single dead key.
- Turn the keyboard or laptop off.
- Tilt it and tap gently, or use compressed air around the Delete key.
- On a desktop keyboard, pull the keycap straight up with a keycap puller or two fingernails, and clean the switch with a dry brush or air. Laptop keycaps are delicate; only remove them if you have seen how your model’s hinge works.
8. Try another port or connection
Plug a wired keyboard into a different USB port, directly rather than through a hub. For Bluetooth keyboards, remove the pairing and pair again. For wireless dongles, move the dongle to a front port away from other USB 3 devices, which can cause interference.
9. Test with another keyboard
Plug in any other keyboard. If its Delete works, your original keyboard has a hardware fault. If Delete fails on both, the cause is software or the system, so go back to the software steps.
10. Remap around the fault
If the key is physically dead and you do not want to replace the keyboard, move Delete to a key you rarely use, such as Scroll Lock, Pause, or the right Ctrl:
- Windows: install Microsoft PowerToys, open Keyboard Manager → Remap a key, pick the spare key on the left and Delete on the right.
- Mac: install Karabiner-Elements, go to Simple Modifications, choose the spare key and set it to
delete_forward.
Full walkthroughs are in How to remap keyboard keys.
Troubleshooting flow
Work down this list and stop when the key works.
- Are you pressing Backspace rather than forward delete? On a Mac, try Fn+Delete.
- Does the key register in the tester above? If yes, it is software.
- Turn off Filter Keys (Windows) or Slow Keys (Mac).
- Test in Notepad or TextEdit to rule out one app.
- Remove any remap in PowerToys, Karabiner or keyboard vendor software.
- Reinstall the driver (Windows) or restart (Mac).
- Clean the key.
- Try another port or re-pair the keyboard.
- Test another keyboard to confirm a hardware fault.
- Remap around the dead key or replace the keyboard.
Related fixes
- One key not working
- Keyboard not typing at all
- How to turn Sticky Keys and Filter Keys off
- Where is the Backspace key
Frequently asked questions
Why does my Delete key erase to the left instead of the right? +
That key is Backspace, even if it is labeled Delete. Mac keyboards label the big key Delete and it works like Backspace. Forward delete on a Mac is Fn+Delete.
How do I forward delete on a MacBook? +
Hold Fn and press Delete. The character to the right of the cursor is removed. On a full-size Apple keyboard there is a separate forward delete key (⌦) above the arrow cluster.
Why does Delete work in some apps but not others? +
Some apps, notably remote desktop clients and a few games, capture or block the key. Test in Notepad or TextEdit. If it works there, the problem is the app's key bindings, not the keyboard.
Can I make another key act as Delete? +
Yes. On Windows, Microsoft PowerToys Keyboard Manager remaps any key. On a Mac, Karabiner-Elements does the same. Both are free and take about two minutes to set up.
Does the Delete key wear out? +
Any key can. Delete is used less than Backspace, so if it fails alone the usual cause is debris under the keycap or a damaged membrane dome, not wear.