Windows 10 doesn't have an easy way to forget wireless networks. You can do it, but it's buried under a few different links that aren't as intuitive as they should be.
That's a problem when you try to connect to a known network that's had its password changed. You'll spend more time digging around for the option then you will connecting!
Network Manager is here to fill that gap and give you the functionality that Windows should!
We've intentionally called it Network Manager as we expect to add more features shortly. Download and install it now via ClickOnce and you'll automatically get prompted for updates when they're available.
Oh, did we mention that it's completely free? That's right, FREE!