After upgrading XCOM Windows 11.6 to SP03 successful today, tried apply patch SO13670, but failed with
Custom Action: com.ca.xcom.installer.common.SETERROR
Status: FATAL ERROR
Additional Notes: FATAL ERROR - class com.ca.xcom.installer.common.SETERROR FatalInstallException: An error occured while copying one or more of the CA XCOM Data Transport system files.
INSTALLATION WAS CANCELLED BY USER DURING INSTALLATION
XCOM™ Data Transport® for Windows
Even though the xcomd service was stopped which should normally also stop the listener, it apparently was still running. That might be due to some previous transfer problem and some known abnormal listener behaviors that should be resolved by installing the latest maintenance patch.