SCCM 2016 TP4: Failed to receive ccm message response. Status code = 500

Yesterday I struggled half a day with the following error while trying to push the configuration manager client to the local system. Configuration Manager 2016 TP4 is running on a fully patched Windows 2012R2 system, with, as a found out later, wsus post-installation task pending. CCMSETUP Log -> <![LOG[Failed to receive ccm message response. Status […]