Not only does it save you time but also your effort in moving the mouse.

However, it may fail to register at times, preventing you from switching windows.

Often, this problem is a hardware issue, but software problems can also cause this to occur.

Hand typing on keyboard with Python journal on the desk

If you also experience the same problem, here are some fixes you’re able to try.

Rule Out Hardware Issues

It is important to rule out hardware issues at the beginning of the troubleshooting process.

If one of the Alt keys isn’t working, try using another working Alt key.

Testing Alt and Tab Keys on a Keyboard Testing Website

If the other Alt key does not help, continue with the rest of the fixes.

Thus, it’s imperative to reinstall the keyboard driver on the system.

Check whether reinstalling the keyboard driver had any effect?

Uninstalling Keyboard Driver in Computer Management Settings

Continue applying the other fixes if not.

Therefore, non-responsiveness on the Windows Explorer side can also be to blame for the shortcut not registering.

Restart Windows Explorer to rule this possibility out.

Restarting Windows Explorer in Task Manager in Windows 10

If not, continue with the remaining fixes.

Enable Peek Option

Occasionally, Alt-Tab fails to register when the Peek option has been disabled in Windows options.

Hence, ensure that isn’t the case here by enabling Peek in Windows configs.

Turning On Peek Preview Option in Windows Settings App

If you’re still having trouble, move on to the next fix.

If yes, you should uninstall the software.

you could also use this fix the other way around.

Advanced System Settings in Windows Settings App

Alt-Tab may function properly with the Alt-Tab terminator installed, making it the best solution.

Modify Registry

If all else fails, modifying the Registry should be your last resort.

Therefore, if you are not familiar with tweaking registry options, skip this step.

Enabling Peek Option in Performance Option Settings in Windows 10

However, avoid changing any other registry configs to prevent causing more trouble.

Alt-Tab Still Isn’t Working?

Hopefully, applying the fixes in the list will get the Alt-Tab shortcut working again.

Uninstalling Alt-Tab Terminator in Control Panel

If it still does not work, try applying some other general fixes.

Why not give them a shot?

Running Regedit Command in Windows Run Command

Creating New File in Windows Registry Editor in Windows 10

Changing Value Data of Newly Create File in Registry Editor in Windows 10