Alt Tab Not Working. When you press Alt + Tab, Windows is not showing anything or it shows opened applications or documents for one or two seconds and then disappears. Users reported that they resolved this issue after disconnecting their headset or USB mouse from the PC.
Here I recommend you to try turning off your machine and uplging all cables at first. Then wait for a few. c) If Alt + Tab works, then there might be some corrupted on your original keyboard, follow the steps below to reinstall it. Many users solve their Alt + Tab not working issue by simply enabling Peek option in Advanced System Settings.
Many users solve their Alt + Tab not working issue by simply enabling Peek option in Advanced System Settings.
Even i activate or deactivate host key (Right Ctrl) it still tabs between programs in host os.
If another keyboard is working properly on your machine, you will need to purchase a new keyboard. This means "Alt Tab not working". So sometimes alt-tab will refuse to work.