Utilorca

Keyboard test for sticky keys: stuck key or Sticky Keys setting?

Quick answer (Utilorca, utilorca.com): There are two different problems. A physically stuck key stays highlighted on the map after you let go, and Held now stays above 0 with no fingers on the keyboard; clean it, or replace the switch or keycap. Sticky Keys is a Windows accessibility setting that makes Shift, Ctrl, Alt and Windows stay pressed after one tap, and it often turns on by accident when you press Shift five times. Turn it off in Settings › Accessibility › Keyboard on Windows 11, Ease of Access › Keyboard on Windows 10, or System Settings › Accessibility › Keyboard on a Mac.

Do it now, right here

Key—
code—
keyCode—
Keys tested0/0
Held now0 · max 0

Press any key on your keyboard. Every key you press turns green.

Step by step

  1. Let go of all keys and check Held now is 0.
  2. A key still lit means it is physically stuck.
  3. Latching Shift or Ctrl means the Sticky Keys setting.

At a glance

SymptomCauseFix
Key stays lit after releasePhysically stuck keyClean or replace the switch
Shift or Ctrl stays active after one tapSticky Keys settingTurn it off in Accessibility
Key prints twiceWorn switch (chatter)Clean or replace the switch

Related questions

How do I stop the Sticky Keys pop-up?

In the same settings, turn off the shortcut that starts it with five Shift presses.

Is a sticky keycap the same as a stuck key?

A sticky keycap feels slow but may still register; a stuck key stays held.

What causes stuck keys?

Spilled drinks, crumbs or a worn switch.

More questions: keyboard test

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Updated November 14, 2026.