MSE ranked well in the review you linked but not so well in others. In
this one, it wasn't even ranked but a blurb appears at the very top saying not to rely on MS security tools.
This one rated Windows Defender, the supposedly better (according to MS) successor to MSE for Win 8 &10 as "meh".
MSE doesn't even make the list on other AV reviews. Defender, which is for Win 8 and Win 10, only rats slightly better than MSE used to.
Besides, MSE is a full time AV, not an on demand scanner, even though you can do manual scans with it. For an on demand scanner only, Malwarebytes free is your best bet.
Also, all AV programs and AV scanners rely on virus definitions downloaded via the internet. It's the only way they can reasonably accurately identify viruses and other malware and those definitions need to be frequently updated.