Almost all computer users use the left mouse button as the primary button. For example, you can use the left button to open files, folders, drag and drop, etc. When suddenly the left mouse button stops working, you may have a big problem with your hands.

It’s always a good idea to start with the most basic fixes, because sometimes that’s enough. Starting essential repairs also saves valuable time because they are quick and easy to perform.


The first step is to connect the mouse to another computer to see if the left mouse button works. This will check if there is a hardware or software problem.

If you are sure that the mouse is connected correctly, you should always check that it is. Check that the mouse USB adapter is fully inserted. if so, try connecting it to another USB port. Remember the most important tip: restart your computer.

Potentially corrupted User Profile

If you share your computer with someone, ask another user if they have the same problem. If they don’t have the same problem, your user profile is corrupted, but if another user confirms the same problem, you have a system-wide problem.

To exclude this possibility, you will need to create a temporary account to see if the left mouse button works. To create this account, right-click the Start menu, and then click Settings. Use the arrow keys to scroll to Accounts and press Enter.

press Language and a black rectangle will appear in the “Your Information” option. Use the down arrow key to scroll to “Family and Others” and press Enter to navigate to it. press Language tap as many times as needed until the black rectangle ends in Add someone else to this computer.

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You must enter a new user name and login information. Once the information has been added, log in to the new account and test the left button. You can try to repair the corrupted profile or transfer your information to a new account.

The following steps should be performed from an unused / backup account. press Win + E keys to open the file manager. You should be able to see protected operating system files and hidden folders / files. If they do not appear anywhere, go to “View -> Settings -> change folder and search settings -> view”.

Related: How to create a list of installed programs in Windows

In the Advanced section, click “Show hidden files, folders, and drivers.” Click Apply and then OK. Go to “C: Users”[Corrupted Username]“And select all the files you see, but don’t touch the following files: Ntuser.dat.log, Ntuser.dat, and Ntuser.ini.

The files you just copied should be attached to “C: Users”[New Username]. »Log out of the replacement account and log in to a new one. Make sure everything is in order and don’t forget to delete the corrupted and unavailable account.

Reinstall the mouse drivers

Mouse drivers may also be damaged or outdated. One possible solution to this problem would be to use or update the drivers for the mouse you are using again.

press Win + X and right-click Device Manager. Right-click the “Mice and other pointing devices” option near the center. Open Properties, go to the Driver tab, and click the Remove Device button.

Left features

Continue with the display option to completely remove the drivers. Disconnect and reconnect the mouse and reinstall the driver.

DISM tool

Another possible solution to the problem of the left mouse button is the DISM tool. To do this, you need to run the command line, but make sure you use it as an administrator. Open a command prompt by searching for it in the search box.

When you open it, type the following command:

The process will take some time, so now would be a good time to get that cup of coffee for yourself. Leave the window alone if you feel like too much time has passed; sooner or later it will end.

Check the mouse properties

To do this, go to “Settings -> Peripherals -> Mouse -> Advanced Mouse Settings”. The mouse properties open. Go to the Button tab and make sure the Enable Click Lock option is selected. If you’re using a laptop, you can use the trackpad to select the check box. Be sure to select Apply.

Check left


Hope one of the ways mentioned works for you. What option are you going to try first?

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