Windows Deployment Server (WDS) / Microsoft System Center Configuration Manager / Microsoft Endpoint Configuration Manager/ Error 0x102 When PXE Booting

Issue:

When PXE booting after an upgrade to Configuration Manager, PXE timed out with error 0x102.

reviewing the smspxe.log revealed "no advertisements found"

reviewed imaging task sequence and boot.wim boot image

found task sequence had not been associated with new boot image

Resolution:

Open Config Manager Console

Software Library

Operating Systems

Task Sequences

right click the task sequence - properties - advanced tab, ticked "Use a boot image" then browse to the boot image.

redeploy the task sequence to all workstations and unknown computers.