How to Fix a Mouse That Double Clicks

A mouse that double clicks when you press once can open files by accident, drop items while you drag and select text you never meant to touch. The cause is usually one of three things: a Windows or macOS setting, dust in the switch, or a switch that is wearing out. This guide shows how to tell them apart and fix each one, starting with the free fixes.

Before changing anything, confirm the fault. Press the left button slowly 20 times on the mouse test and check that the counter goes up by exactly 20.

Why a mouse double clicks

Under each mouse button sits a small switch. In most mice it is a mechanical switch with two metal contacts. Glorious, a mouse maker, explains that these contacts bounce: when they first meet, “they don’t make a clean connection.” The mouse waits a short time after each click, called the debounce time, so that the bounce is not read as a second click.

When the contacts wear, get dirty or the debounce time is too short, a bounce slips through and one press becomes two. Glorious notes that sudden double clicks with no change to your settings often mean the switch “may be wearing out”. Mice with optical switches avoid most of this, because, as Pulsar puts it, they “don’t have physical contacts prone to wear and bouncing”.

Not every double click is a hardware fault, though. A setting can make a single click act like a double click, and that is worth ruling out first.

Step 1: work out whether it is a setting or the mouse

Logitech’s support pages give a simple rule:

It has double clicked since the first day. Check your settings, especially the Windows option that opens items with a single click.
It only started recently. That points to the hardware, and Logitech advises contacting its support.

Then narrow it down:

Try the mouse in several programs, such as File Explorer and Control Panel on Windows, or Finder on a Mac. If it only happens in one program, the problem is that program’s settings or a button assignment in your mouse software.
Plug the mouse into a different computer. Logitech’s advice: if the double click shows up there too, the mouse is at fault.
Repeat the 20 press check on the mouse test on each computer, so you are comparing numbers rather than impressions.

Step 2: check your computer’s settings

Windows: single-click to open

If Windows is set to open items with one click, every click on a file behaves like a double click. Logitech’s instructions for Windows 10: search for “single-click”, open Specify single- or double-click to open, and on the General tab under Click items as follows, choose Double-click to open an item (single-click to select).

Windows: double-click speed and ClickLock

Microsoft’s path is Start > Settings > Bluetooth & devices > Mouse > Additional mouse settings. On the Buttons tab of the Mouse Properties window:

Double-click speed controls how quickly two clicks must follow each other to count as a double click. A very slow setting makes Windows treat two separate clicks as one double click.
ClickLock lets you highlight or drag without holding the button down. If it is switched on by accident, a held click seems to stick, which can feel like extra clicks. Untick Turn on ClickLock if you do not use it.

Mac: double-click speed

Apple’s path is Apple menu > System Settings > Accessibility > Pointer Control, then drag the Double-click speed slider.

You can check the effect of a speed change on the double click test, which times the gap between your two clicks.

Step 3: check the connection

Wireless and USB problems usually cause missed clicks and lag rather than extra clicks, but they are quick to rule out and they can make a fault harder to diagnose. Logitech’s connection checklist:

Charge the mouse fully, or fit new batteries.
Plug the cable or receiver into a different USB port, ideally directly on the computer rather than through a hub or extender.
If you use a USB 3.0 port, try a USB 2.0 port.
Re-pair the mouse with its receiver, or test it on another computer.

Step 4: clean the switch

Pulsar lists cleaning first among its fixes: dust trapped under a switch can cause double clicking, and in some cases a blast of compressed air clears it.

Unplug the mouse or switch it off.
Hold the can upright and blow short bursts of air into the gaps around the button you are having trouble with, pressing the button a few times while you do.
Wait a minute, then repeat the 20 press check.

Do not pour liquids into the mouse or open it while it is still under warranty.

Step 5: raise the debounce time

If your mouse software lets you change the debounce time, a small increase can stop minor double clicking. Pulsar recommends it when “the double clicking is minor”. Where to find it, according to each maker:

Mouse software	Setting
Glorious CORE	Debounce time, 0 to 16 ms on the Series 2 PRO
Pulsar Fusion	Debounce time, as low as 2 ms
Corsair iCUE	Button Response Optimization, an on or off switch under Device Settings

Raise the value in small steps and re-test after each one. A higher debounce time adds a tiny delay before the next click can register, so it also lowers the top speed you can reach with fast techniques such as drag clicking. Not every brand offers this setting. If yours does not, skip to the next step.

Step 6: warranty, repair or replace

If the mouse still double clicks after all of the above, the switch is worn or faulty. Pulsar’s advice at this point is that the switches “need to be replaced”.

Check the warranty first. Razer gives 2 years on its mice (3 years on the Viper Mini Signature Edition). Logitech G sets the length per model, for example 2 years on the G705. Other brands state theirs on the box or product page.
Replace the switch. On many mice the switch can be desoldered and replaced, and some mice have hot-swappable switches. Opening the mouse can void the warranty, so check the terms first.
Buy a new mouse. If you replace it, a mouse with optical switches avoids the contact wear described above.

Software fixes that hide the problem

Some programs filter out clicks that arrive too close together. They can make a failing mouse usable for a while, but the switch keeps wearing and the fault gets worse. Treat them as a stopgap until a warranty claim or replacement, and download software only from sources you trust.

Frequently asked questions

Why does my mouse double click when I click once?

Most often a worn or dirty switch whose contacts bounce, so the mouse reads one press as two. Less often a setting such as single-click to open in Windows, or a button assignment in the mouse software, is the cause.

Can a double clicking mouse be fixed?

Often, yes. Settings problems are fixed for free, compressed air can clear dust, and raising the debounce time can stop minor bounce. A worn switch needs replacing, either under warranty or by swapping the switch.

Is mouse double clicking covered by warranty?

It is usually treated as a hardware fault. Razer mice have a 2 year warranty and Logitech G warranties are set per model, so check the length for your model and contact the maker before opening the mouse.

Does debounce time fix double clicking?

It can when the problem is minor. A longer debounce time makes the mouse wait longer before accepting another click, so small bounces are ignored. It cannot fix a switch that is badly worn.

Why does my mouse only double click sometimes?

Switch wear is often intermittent at first. The contacts bounce only on some presses, and the fault usually becomes more frequent over time.

Do optical switch mice double click?

Much less often. Optical switches have no metal contacts to wear or bounce, which is why makers such as Pulsar and Glorious use them.