I currently have a windows 10 system running on Build 16299 and its x64 bit. I do not understand why some applications are not able to be downloaded. Illustrator is the one I want specifically but im not able to download becuase it says "Not Compatible" where the download button should be.
BTW: Your windows version doesn't been supported by Microsoft. It means, you get no more security patches and other updates. You have a high risk if your computer is connected to the internet. I'll recommend an update to the latest Windows build 20H2.