Upgrade to Windows 10 removed programs when I was in the middle of projects

The Windows 10 download removed a number of programs that I use frequently. Specifically, Cubase le5 and Movie Maker. Cubase le5 is no longer available; I have tried to replace Movie Maker by downloading Windows essentials (several times) but after saying that it is being installed, it simply disappears into the ether and I cannot locate it on my computer. Since I was in the middle of a couple of major projects using these two programs, I should be interested to know why Microsoft has not offered an alternative with Windows 10 and how I can restore them.