Windows 10 is the only supported version of Microsoft Windows.
Do you know what version of Windows your work or home computer/PC is running?
Look at the image of a computer screen below:
Unless you can see the Windows 10 logo, as above, in the bottom left corner of the screen, you are NOT running Windows 10.
If you want know the specific version you are running, goto either :
Settings > System > About > Windows Specification
or
Control Panel > System and Security > System > Windows Edition
Windows Versions – Start Button Icons
:jk:
