Client Online count is wrong in Symantec Endpoint Protection Manager (SEPM) Home Screen > Endpoint Status, and may sometimes show a negative number.
SEP client that is installed on "Windows 10 Pro for Workstations" is sending the incorrect OS type value (-1593180158 instead of 2701787138) to the SEPM causing them to not be counted in the status.
Our Engineering team is investigating this issue and will update this document when a solution becomes available.
CRE-9776, CRE-13315