One of our customer reported as “Release Management Server for Team Foundation Server 2013” installation fails with below error :-
As per him “This server did have an older version of Release Management installed and we believe we have fully uninstalled it including removing the Release Management service and associated SQL DB. “
Solution to the problem :-
The uninstall left a registry entry of the InstallDir, causing the install to believe there already was an instance of RM Server installed. Just remove the entry and it should work.