Run the check with the mouse that’s causing trouble. It takes about two minutes: you double-click on purpose a few times, click normally, hold the button down, and scroll. Every step can be skipped. The result lists each button, how many presses it sent, and any that arrived too fast to be you.
Before you test: rule out your computer’s settings
Two settings can make a healthy mouse look like it’s double-clicking. They take a minute to check and cost nothing.
Windows: single-click to open
If one click opens files and folders in File Explorer, Windows may be set to open items with a single click. That looks just like a mouse double-clicking, even though the mouse is fine. Logitech lists it as the first thing to check.
Open the setting
Search the Start menu for “single-click” and open “Specify single- or double-click to open.”
Choose double-click
On the General tab, select “Double-click to open an item (single-click to select),” then select OK.
Double-click speed on Windows or Mac
Your computer decides whether two clicks are a double-click by how close together they land. If that window is set too long, two separate clicks can open something as if you had double-clicked it. Logitech suggests checking this setting when a mouse seems to double-click. On Windows, it’s the Double-click speed slider in the mouse settings, and the default is 500 milliseconds. On a Mac, open System Settings, choose Accessibility, then Pointer Control, and adjust Double-click speed.
If the problem only happens in one program, check that program’s settings and any button assignments in your mouse software before blaming the mouse.
How to run the double-click check
Double-click on purpose
Double-click the left button as fast as you comfortably can, three times. This measures your own fastest deliberate double-click.
Click normally
Single-click at your usual pace at least 20 times. Click any other button that misbehaves too, including the side buttons.
Hold the button
Press and hold the left button for 3 seconds, as if you were dragging a file. The test watches for the button letting go on its own.
Scroll the wheel
Roll the wheel slowly in one direction. The test counts any steps that go the opposite way.
Click the way you normally do. Some worn switches only misbehave on lighter presses, so pressing harder than usual can hide the problem.
How the test decides a click was unwanted
Every press is timed. When a button sends a second press sooner than the cutoff, the test counts it as unwanted.
The cutoff comes from you. In the first step you double-click as fast as you can on purpose, and the test sets the cutoff a little below your typical fast double-click, at 80% of the middle value. A press quicker than that is faster than you can click deliberately, so it’s very unlikely to be your finger.
If you skip that step, the cutoff is 80 milliseconds. That’s our default, not an industry standard, and you can adjust it beside the test. Lower it if real double-clicks are being flagged. Raise it if you’re sure a press was unwanted and it wasn’t caught.
This cutoff is separate from your computer’s double-click speed setting. That setting decides how close together two clicks must land to count as a double-click you meant. This test isn’t checking whether you double-clicked. It’s checking whether the mouse sent a press you didn’t make.
What your result means
Swipe sideways to compare columns.Scroll table to view all columns.
| What you see | What it suggests | What to do next |
|---|---|---|
| No unwanted clicks in 20 or more presses | The mouse registered each press once during the check. | If the problem comes back, run the check again while it’s happening. |
| One or a few unwanted clicks on one button | That button’s switch may be starting to fail. Worn switches fail now and then, not every time. | Retest that button with normal and lighter presses, then try another USB port. |
| Many unwanted clicks on one button | A worn or dirty switch is the most likely cause. | Work through the fixes below, then contact the maker if the mouse is under warranty. |
| Unwanted clicks on every button | A setting, mouse software, or connection problem is more likely than every switch wearing out at once. | Check the single-click and double-click speed settings, the mouse software, and another computer. |
| The button let go during the hold | The switch briefly opens while held. It’s the same fault that drops files in the middle of a drag. | Treat it like unwanted clicks on that button. |
| Scroll steps went the wrong way | The wheel sensor may be dirty or worn. | Retest with a slow, even scroll before acting on it. |
| The same result on another computer | The problem travels with the mouse. | A fault in the mouse is likely. |
| The problem only happens on this computer | The mouse may be fine. | Check settings, mouse software, and USB ports on this computer. |
Why a worn switch clicks twice
Inside most mouse buttons is a small switch with two metal contacts. When you press, the contacts meet and close the circuit, but they don’t settle at once. They bounce open and closed for a brief moment, often a few hundred microseconds, before they rest. The mouse handles this by ignoring changes for a few milliseconds after each press. That wait is called debounce, and it’s why one press normally counts as one click.
Over millions of presses, the contact surfaces wear and a thin film of oxide can build up. Worn contacts make a noisier signal, and the chatter can outlast the debounce wait. When it does, the mouse reads the gap as a release and the next touch as a new press. That’s the extra click. Logitech lists double-clicking as a sign that a switch may be nearing the end of its life. Because wear builds slowly, the problem usually starts now and then and gets worse.
How to fix a mouse that double-clicks
Work through these in order. The first steps are free and rule out causes that aren’t the mouse.
Check your computer’s settings
Use the two checks near the top of this page: single-click to open, and double-click speed.
Plug straight into the computer
Skip USB hubs and extenders, and plug the mouse or its receiver into a different port on the computer itself. For a wireless mouse, keep the receiver close to the mouse and away from USB 3.0 ports and drives, which can interfere with it. A short USB extension cable helps.
Test on another computer
Run this check on another computer. If the same button still double-clicks, the fault is in the mouse.
Raise debounce, if your mouse has the setting
Some mice let you lengthen the debounce wait in their app. Keychron’s Launcher has a Debounce Time slider from 0 to 20 milliseconds, and Corsair’s iCUE has a Button Response Optimization setting that helps prevent accidental clicks. Raise it one step at a time. A longer wait can hide a worn switch, but it can delay every click by up to that amount, and it only works while the bounce stays shorter than the wait.
Use the warranty
If the mouse is under warranty, contact the maker. Save the result card from this test. It records the date, the button, and each unwanted press.
Clean around the button
Switch off or unplug the mouse, then blow compressed air around the button to clear dust. Logitech recommends this for buttons that misbehave. It helps when dirt is the problem, but it won’t fix a worn switch.
Replace the switch or the mouse
Replacing a switch means opening the mouse and soldering, and it may void the warranty. For an inexpensive mouse, replacing the whole mouse is often simpler.
What this test can’t tell you
The test sees clicks after your mouse and your operating system have handled them. It can’t look inside the switch, measure how long the mouse takes to report a click, or prove which part failed.
- Trackpads: tap-to-click and pressure clicks work differently from mouse buttons, so a trackpad result mostly reflects its settings.
- Wireless mice: a receiver that’s far from the mouse, or next to a USB 3.0 device, can make a wireless mouse behave erratically. Retest with the receiver close by.
- One clean run: an intermittent fault can hide during a two-minute check. If the problem comes back, test again while it’s happening.
Curious how fast you can click? The CPS test measures your clicks per second with a chart of each second.
- Gaming mouse double-clicks when clicked once · Logitech SupportChecked 2026-11-09. Used for the single-click setting check, testing in other programs, bypassing hubs, and testing on another computer.
- Button / Key Issues General Troubleshooting · Logitech SupportChecked 2026-11-09. Used for double-clicking as a sign of a worn switch, checking the double-click speed setting, cleaning buttons with compressed air, and testing on another computer.
- Wireless product not working properly when also using a USB 3.0 device · Logitech SupportChecked 2026-11-09. Used for keeping a wireless receiver close to the mouse and away from USB 3.0 devices.
- SetDoubleClickTime function (winuser.h) · Microsoft LearnChecked 2026-11-09. Used for the Windows default double-click time of 500 milliseconds.
- Change your mouse’s response speed on Mac · Apple SupportChecked 2026-11-09. Used for the Double-click speed setting in Accessibility > Pointer Control.
- Debounce a Switch (SCEA094) · Texas InstrumentsChecked 2026-11-09. Used for switch contacts bouncing for hundreds of microseconds and why a debounce delay is needed.
- Mouse Double-Clicking? Why Micro Switch Contacts Wear and What Magnetic Switches Change · KeychronChecked 2026-11-09. Used for how contact wear and oxide let bounce outlast the debounce window, and the delay a longer debounce adds.
- How to Set Mouse Debounce Time on Launcher · KeychronChecked 2026-11-09. Used as an example of an adjustable debounce setting (0 to 20 ms).
- Button Response Optimization Guide · CorsairChecked 2026-11-09. Used as an example of a mouse setting that helps prevent accidental clicks.
- Event: timeStamp property · MDN Web DocsChecked 2026-11-09. Used for how browsers time input events and Firefox's default 2 ms rounding.
Mouse double-click test FAQ
Can a mouse double-click because of software?
Yes. The Windows single-click setting, a double-click speed that allows too long a gap between clicks, mouse software that assigns a double-click to a button, or a program’s own settings can all make one click act like two. If unwanted clicks show up on every button, or only in one program, look at software first.
Does this test work with a trackpad?
It records physical trackpad clicks, but tap-to-click and pressure-sensitive trackpads work differently from mouse buttons, so the result isn’t a reliable check of a trackpad.
Will raising debounce slow down my clicks?
Slightly. Debounce makes the mouse wait before it accepts another change, so a click can be confirmed up to that many milliseconds later. Pick the smallest setting that stops the unwanted clicks.
Is a mouse that double-clicks covered by warranty?
It depends on the maker, the model, and when you bought it. Check the warranty terms, and include the result card from this test when you contact support.
Why does the result say there aren’t enough clicks?
Worn switches fail some of the time, not on every press. With fewer than 20 presses, a clean result doesn’t tell you much. Click at least 20 times on the button you’re checking.