Your old PC isn't aging badly — this Windows security layer is just too heavy for it, so you need to disable it.

And it's almost always disabled.

Windows Defender has several security settings, including some you need to switch on to get the utmost protection. Here's why.

Windows Security is the built-in antivirus suite within Microsoft’s operating system, and for most folks, it does a good job. But out of the box (so to speak), a couple of protections are turned off ...

In an Ask Microsoft Anything livestream on YouTube, Microsoft Principal Security Engineer Arden White, Principal Software ...