If WinKey+Spacebar keyboard combination is not working in Windows 11/10, then follow these troubleshooting suggestions to fix the issue.

If the Windows key is not working properly on your keyboard, there are several things you can do to troubleshoot it.

If the Windows Period key is not working on your system, it may be due to corrupt drivers or an incorrect keyboard layout. Use these fixes to resolve the issue.

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.