We currently have TFS 2013.RTM installed on a single server, and did not install any of the updates for TFS 2013. The server contains
Windows 2012
SQL Server 2012
SharePoint 2013
We now would like to upgrade to 2015.1. Will it be necessary to uninstall the existing instance of 2013.RTM prior to installing 2015.1 or will the new version install over the old version?
Also, will the current custom settings specified in the Application Tier Summary be maintained?