How to get free virus protection software<br>Find out which version of windows you are running. In general, most free anti-virus programs are intended for use with windows operating systems; however, new versions are updated for the latest windows versions. [substeps] For example, if you are still running windows xp, make sure you do not download a version only intended for windows 8 and higher.
Windows XP could have problems with, or may not even be able to run, programs made specifically for Windows 8 and higher.
The passage says not to download a program designed for Windows 8 or higher if you are running XP. This implies that you can't run those programs, or that those programs may not work properly on XP.