I use unity hub to install an editor so that I will eventually be able to add modules afterwards, but every time the download finishes, the installation suddenly disappears then the popup shows up saying “Installation Failed” “Something went wrong installing Unity…” and I have absolutely no idea what causes the problem. I’ve followed every directions in every forums, youtube, I’ve even tried reinstalling it over and over, disabled my antivirus and firewall, but still nothing works, and because of my slow internet, I can only make the download every midnight and I’ve been troubleshooting this for almost a week now which is so frustrating. I’ve also tried installing through the archives but errors keeps popping out everywhere. Please help, I wanna know what causes this problem. For reference I am using windows 10 pro with 16gb ram running on an amd ryzen 5… if that helps. I hope you can help 
have you tried running hub or installer as an admin? and does c: drive have enough space?
yes I did, I still have 200gb
SOLVED it by Reinstalling windows