If the keyboard Tab key is not working on your Windows PC, this guide is for you. We will look at different ways to fix the issue and return the Tab key back to normal functioning.

Click on the Run button for the Keyboard troubleshooter. Allow the troubleshooter to scan your system for any issues related to the keyboard, including those affecting Alt-Tab functionality.

If, after pressing the ALT+TAB keyboard shortcut key, it is not working as usual on your Windows 11/10 PC, then this post will help you fix the problem.

Third-party app: Some third-party keyboard apps have the ability to interfere with the functionality of your keyboard, and that could be the reason why Alt-Tab is not working in Windows 11.

Also my brightness button does not work. Please help me." ... Under the "Keyboard" tab, check or uncheck the "Use all F1, F2, etc. keys as standard function keys" according to your preferences.