Can't uninstall .NET 5 RC1

Question

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 AspNet5.ENU.RC1.exe. This version of the installer seems to have been wiped from the internet in favor of the RC1 Update 1 installer (AspNet5.ENU.RC1_Update1.exe). If I cancel the prompt I get 0x80070642 - User cancelled installation. If I point it to the Update 1 installer, I get 0x80070001 - Incorrect function. I'm able to repair with no problems, I just can't uninstall.

How can I fix this so I can properly uninstall .NET 5 RC1?

Answer 1

I ended up reinstalling Windows for an unrelated reason. I made a point of not installing the update to "Microsoft ASP.NET and Web Tools" and the problem has not happened again.

Answer 2

I downloaded only AspNet5.ENU.RC1.exe file from here: https://www.microsoft.com/en-us/download/details.aspx?id=49959 start it and run "uninstall". The uninstallation procedure with this file, for ASP.NET 5 RC1, works without problems.

Answer 3

I had the same issue, I found it by googling the KB id. http://download.microsoft.com/download/B/0/A/B0AEBD7D-6979-4265-B1AC-A0B73618FB22/AspNet5.ENU.RC1_Update1.exe

or this:

http://download.microsoft.com/download/1/8/0/18048EDD-9F45-479A-B208-6F7C91CF2ECC/AspNet5.ENU.RC1_Update1_KB3137909.exe

Answer 4

I managed to uninstall it by downloading the installer from asp.net and tried to install it by double clicking on the file. It gave an option to repair and uninstall.