When using Microsoft Configuration Manager for Build and Capture task sequences, or for operating system deployment of Windows 10 version 1511, the process may hang during installation of Office software updates during the Install Software Updates step. In some cases, this step can hang for more than 24 hours.
This can occur when using a Windows 10 version 1511 image that has not been patched to the May 10, 2016 cumulative update. In this scenario, a deadlock may occur if the Install Software Update step is trying to install a large number of updates. This is a particularly common issue for Office-related updates which can trigger a deadlock in the CCMExec and TSInstallSWUpdate processes, preventing the step from proceeding.
For complete details please see the following:
J.C. Hornbeck, Solution Asset PM
Microsoft Enterprise Cloud Group