Hotfix KB4567007 is now available which will resolve the PXE Boot failures or task sequence delays after Configuration Manger CB v2002 upgrade

https://support.microsoft.com/en-in/help/4567007/pxe-boot-fails-after-updating-to-configuration-manager-current-branch

The hotfix KB4567007 is now available in SCCM Console under update and servicing section.

There is a known issue which was described in below post. After configuration Manager v2002 upgrade, PXE Boot fails or task sequence delays.

http://www.configmgr-tutelage.com/mecm-cb2002/mecm-cb-2002-upgrade-operating-system-deployment-via-pxe-extremely-slow-failing-resolving-task-sequence-dependencies-related-osd-tasks-issues/

Thank you for reading!!!