Uninstall Xamarin on Windows

Question

I want to remove the previous xamarin from my machine and install the new version (Xamarin VisualStudio 3.9.236), but when I try to install this version, I get this error:

An outdated version of Xamarin cannot be uninstalled. Contact your technical support team.

Any idea? PS: I looked at this article . But I have the same problem.

Answer 1

I understood where the problem is! First I turned on the MSI protocol for the MSI installer file:

msiexec /i Xamarin.VisualStudio_3.9.289.msi /l*vc:\Users\%USERNAME%\Documents\xamarin-vs-msi.log 

And searched for Return Value 3 (action not completed):

 MSI (s) (F8:64) [08:31:41:884]: Unexpected or missing value (name: 'PackageName', value: '') in key 'HKLM\Software\Classes\Installer\Products\371D35B64B9A7994980A677C62256FDE\SourceList' 

As you can see, the problem is the input key in my registry, I deleted it, and then installed the MSI installer:

 'HKLM\Software\Classes\Installer\Products\371D35B64B9A7994980A677C62256FDE\SourceList' 

Answer 2

Try a keyword search on the C drive "Xamarin", "Mono". And delete manually