无法卸载。net 5 RC1

I'm trying to install .NET 4.6.1, but it claims I have a newer version installed and won't let me. I do have .NET 5 installed, so I'm trying to uninstall that. I had two installations, one for RC1 and one for RC1 Update 1. I removed the Update 1 installation, that went fine, but RC1 itself won't uninstall. When I run the uninstaller it opens a prompt to locate I'm trying to install .NET 4.6.1, but it claims