Windows · Open search

Start

Windows · Linux

Win+S

Mac

Not on this system

Opens the search box directly, and the same box looks through settings and the web as well as file names.

Win-key combinations are captured before any program sees them — nothing can clash with them, and nothing can override them either.

Reading the key names

Keys joined by + are pressed together: Ctrl+Shift+P means hold Ctrl and Shift, then P.
On a Mac, Cmd is ⌘, Option is ⌥ (labelled Alt on some keyboards), Control is ⌃ and Shift is ⇧.
Windows Ctrl usually becomes Cmd on a Mac, but not always — this reference lists both combinations separately.
With a Korean, Japanese or Chinese input method active, shortcuts built on letter keys may not fire. Switch to Latin input and try again.
When a combination does nothing, another program has often claimed it as a global shortcut first.

Q. What is the shortcut for Open search in Windows?

Opens the search box directly, and the same box looks through settings and the web as well as file names. It is Win+S on Windows and — on a Mac.

Q. Is it the same on Windows and Mac?

No — Win+S on Windows, — on a Mac.

Q. How many keys is that?

2 pressed together. The combination sits under Start in Windows.