To enable the classic old legacy Search Box in Explorer on Windows 10, you can tweak the Registry or use Mach2. Do it if you do not like current default behavior.

Here’s how it works. Once you upgrade to the Windows 10 May 2019 Update (version 1903), you'll notice something different in the taskbar. You'll see a search box and a Cortana button next to it.

You can now customize the Search tool through its own dedicated settings page in the Windows 10 May 2019 Update.

A bug in the Windows 10 Search is causing blank results to be shown in both the Start Menu and in File Explorer. This is making it impossible to search for and launch an application from the Start ...