My problem's symptom is exactly the same as this: deploying new agent with AV
However, my agents have no antivirus or leftover components of antivirus on them that I can find, McAfee or otherwise. What else could be the cause? For every 10 client installs this seems to happen once or twice.
I've tried reinstalling the agent, force installing the antivirus using vulscan, and even running the antivirus msi install command manually (which just immediately returns.) I've checked installed software and packages and there's nothing installed. Previously some of these machines, just like most of ours, had Trend Micro SMB installed. It was removed prior to beginning the LANDesk client install and I've confirmed it's completely gone.
The error in my installav.log file is simply the same as linked above:
ERROR: Installation failed. C:\Program Files (x86)\LANDesk\LDClient\antivirus\LDAV.exe /install (0x8DB301C0)
Last status: Failed: LANDesk Antivirus msi failed (0x8DB301C0)