Requirements:
i. Log Analytics workspace
ii. Azure Automation Account
From the Log Analytics Workspace, click Connect a data source
Save the Workspace ID and Workspace key
Install the agent on the server, providing the Workspace ID and Key found in the workspace
Go into the automation account, then from the left into update management
Enable update management on the VM by clicking on “Click to manage machines”

You can then see the missing updates and create an update deployment
Please allow up to 24hrs for all the servers to show up (it usually takes about an hour)