Problem
Getting error:

"PXEPreZero: Invalid PXE Server list format

PXE-MOF: Exiting Intel Boot agent."

Environment
Deployment Solution 6.9 SP4.

Cause
Option 60 (PXE forced mode) is set up on the DHCP, but the scope options are set incorrectly.

Resolution
Make sure the scope options for option 60 are set correctly using KB article 28035