Spectrum was successfully upgraded to the most current version, but the old Spectrum component version 10.4.2 is still being displayed in the Control Panel --> Programs and Features.
Why the Spectrum upgrade did not remove the older version?
Release : Any Release
Component : Spectrum Core / SpectroSERVER
Launch the Regedit.exe utility and go to:
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\SPECTRUM 10.4.2
Remove the SPECTRUM 10.4.2 folder
Stop SpectroSERVER and Archive Manager
Reboot server