- You are inadvertently double-clicking instead of single-clicking.
- The mouse settings have been modified, either manually or by another program, to send a multiple-click command when you perform a single physical click.
- The mouse drivers are corrupted.
- The mouse hardware is defective.
1. Check If Single-Clicking Is Enabled
Your issue might be a simple option in Windows that you enabled by mistake. Open a File Explorer window, and on the View tab, click Options. On the General tab, you’ll see a Click items as follows header.
The default behavior is Double-click to open an item (single-click to select). If you have Single-click to open an item selected, you only need to click a folder once to open it.
With this option flipped, you might think your mouse is physically double-clicking when it’s really a software option.
2. Try Another Mouse
If your issue wasn’t the simple fix above, you should see if your mouse itself is faulty. To test this, you can either plug your current mouse into another computer, or plug a different mouse into your current computer.
Should your mouse continue to misbehave on a different computer, that’s a good sign that it’s defective. If you try another mouse on the same computer and it doesn’t have any issues, this is another sign your original mouse is defective.
3. Reinstall Mouse Drivers
It’s worth a try to remove your current mouse driver and let Windows reinstall it. To do this, right-click the Start Button and choose Device Manager. Expand the Mice and other pointing devices category and right-click your mouse. Choose Uninstall device, then restart your PC.
Note that you’ll have to navigate to the restart command without using your mouse after you do this. Tap the Windows Key, then press Tab until it focuses on the left group of icons. Use your arrow keys and Enter to select the power button, then Restart.
4. Check mouse hardware and try swapping mouse ports if possible
Shut down the computer. Verify that the mouse cable or receiver is not damaged and that the pins on the end connector are not bent. Remove any mouse or USB extension cables. If possible, try the mouse in a different port, preferably one directly on the computer. Turn on your computer and retest.
5. Test the mouse on another computer or test a different mouse on the computer
To determine whether the mouse or the computer is defective, follow these steps:
- Test the mouse in question on a system that you know is working. If the problem appears to follow the mouse, you may have to return or replace the mouse.
- Test a mouse that you know is working on the computer in question. If the problem appears to remain on the computer, then the problem is most likely software-related.