Symantec Endpoint Protection (SEP) cannot be opened via Windows Defender Security Center (WDSC).
No response when clicking the "Open Symantec Endpoint Protection" link.
SEP registered wrong binary to launch the UI when clicking the link in WDSC.
This issue is fixed in Symantec Endpoint Protection 14.2 RU1 by changing product code so that SEP registers correct binary used to launch the UI when opening the link in WDSC. For information on how to obtain the latest build of Symantec Endpoint Protection, see Download the latest version of Symantec Endpoint Protection.