There are many reasons why Windows search bar fails to work even after you've tried these fixes. If you're using an unauthorized Windows ISO installed on your PC, then the search will fail to work because of conflicts with your device. Similarly if your PC is not compatible with Windows 11, these errors are commonplace. Follow our guide on latest Windows 11 installations or you can reset the PC via the above methods. Always go for a fresh installation on your Windows PC. Otherwise these errors will emerge occasionally.