We have several clients on our network that do not display in the SEPM client status section. I've looked at all groups (Default, Workstations, etc.) but there are at least a dozen clients out of about 100 that do not show up anywhere. The clients show current "last connected" times in the Troubleshooting menu and are attaching to the proper server with up-to-date definitions. The only difference I've noticed is that the working clients connect to the server IP on the Troubleshooting menu, while the server hostname is listed on the machines that do not work. That may be a coincidence as I can still ping the hostname from the client.
The problem is on Windows 7 and Windows 10 clients, some with v12 and some with v14.
I haven't gone through all of the steps in the following url yet - thought I'd see if there was an easy fix in the forum first! https://support.symantec.com/en_US/article.TECH160964.html
Thanks,
J. J.