If you do not wan't to blow up alle your agents, do not install the update!
Problem 1:
rainstall.exe uninstall CBA8 and is not able to reinstall it.
Mon, 22 Oct 2018 15:13:45 Unable to register "C:\Program Files (x86)\LANDesk\Shared Files\residentagent.exe", the service is currently marked for deletion the registration will be attempted again. ERRORSUMMARY_BEGIN Fatal error during installation. Commonclient.inf: (0x00000643) Rainstall.exe,9000 ERRORSUMMARY_END
Problem 2:
Detection is not working (if you are on Rev2 - not updated automatically to Rev3) : Ivanti2017-3_SU5 detected number not going down despite successful patching