Depending on which ESRI products are installed the number of registry keys that need to be renamed varies. They are all found in the main registry key
''HKEY_LOCAL_MACHINE\SOFTWARE\'''Wow6432Node'''\ESRI\ArcGIS''
Examples:
* HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\ESRI\ArcGIS\RealVersion rename to e.g. RealVersionNew