As a follow up - the issue in my case with this was that when you issue
the ISV cert to your JAMF proxy server, by default SCCM sees it as a new
certificate for the server (assuming you install SCCM on servers). The
client then re-registers with the ...
My fix for this issue was to login to SCCM DB server and run this SQL
query against SCCM DB: "select * from ClientKeyData where Thumbprint =
0x" Where is the thumbprint of your
ISV certificate. I had to type mine in manually as copying and pasting
f...