Can't install VS2015 Pro - Installer thinks 2015 Enterprise is already installed

Question

This image pretty much sums up my problem:

I don't have Visual Studio Enterprise 2015 installed. I did have a prerelease version installed - which I have since uninstalled.

Things I've tried that didn't help:

• vs_enterprise.exe /Uninstall /Force
• Re-installing the Enterprise RC and uninstalling it.
• Installing the release version of 2015 Enterprise (tells me there's a preview version I need to uninstall)
• Manually deleting all references to Visual Studio 2015 and Visual Studio 14.0 from the registry
• Pulling out all of my hair

VS 2015 does not exist in my "Programs and Features" and the files don't exist on my disk.

I also have VS 2013 installed which works fine, but I'd like to upgrade to the latest version and currently that is proving quite difficult.

Any suggestions would be greatly appreciated.

Answer 1

Check registry for this key "SOFTWARE\Microsoft\DevDiv\vs\Servicing\12.0
then choose the installed version then edition you want to remove..example:
SOFTWARE\Microsoft\DevDiv\vs\Servicing\15.0\enterprise
and remove it!
Edit: This is the path that used to detect VS according to Microsoft official website https://msdn.microsoft.com/en-us/library/bb164659.aspx