Monitor for Missing Patches
When a Windows Agent is installed on a device, the Patch Status v2 service is automatically added to that device. The Patch Status v2 service queries the Windows Update Agent (WUA) on the device to determine the Microsoft and third-party application patches that are missing.
The Patch Status service shows:
total number of missing patches
number of patches installed with errors
missing patches by category
missing patches older than a user-specified number of days