Installing PIM 12.8 SP1 Windows version on a box already Microsoft Exchange Serve 2016 installed, but installation of "Microsoft Visual C ++ 2005 Redistributable" performed by PIM installer looked failed and not installed.
CA Privileged Identity Manager 12.8 SP1Windows 2012 R2Exchange Server 2016 and other required components for it are installed in advance.
Installer of PIM Windows version utilizes InstallShield and it requires Windows 8.3 naming convention enabled. But, it looks Windows 8.3 naming convention is disabled after installation of Exchange Server 2016 or other required components for it are completed.
So, please enable 8.3 naming convention before PIM installation, or download Microsoft Visual C ++ 2005 Redistributable" from Microsoft download site and install them manually.