It means you need to have 64-bit hardware to install a 64-bit OS. However, there are many computers still running on Windows 10 32-bit OS, and there is a chance that they may be able to upgrade to ...

In this guide, we'll show you the proper steps to upgrade from the 32-bit to the 64-bit version of Windows 10 without purchasing a new license.

A "non-security" update to 64-bit Windows helps to improve security.