Hi Eric,
Welcome to the Microsoft Q&A forum.
Yes, we can create an alert If a virtual machine (VM) is not added in the dynamic scope of maintenance configuration.
you can create an alert by following these steps to address the situation and generate an alert:
In the Update Manager, enable the "Alerts (Preview)" feature if it is not already activated. This feature is crucial for monitoring and alerting.
Next, you will need to create a new alert rule within the Update Manager. Start by clicking on the “Alerts” tab, and then select “+ New alert rule” to initiate the creation of a custom alert. This action will open a form where you can specify the details for the alert rule.
For the signal type, choose “Custom log search,” which allows you to define a query that will check for missing VMs based on your specific criteria.
Define the severity level of the alert. Set up notification methods, such as email or SMS, and specify the recipients. Review the alert settings and click “Create”.
Virtual machine alert will be triggered once the VM is reach's the threshold level limit and sends the alerts accordingly.
Additionally, Refer the link to create alerts:
https://learn.microsoft.com/en-us/azure/update-manager/manage-alerts?source=recommendations
We have configured the system to generate alerts for VMs that are not within the dynamic scope of maintenance configuration as shown below:
If you are still facing the issue, please let us know in the comments. We are happy to help you.
If you find this response helpful and it resolves your issue, please consider marking it as “Accepted” or giving it an upvote. This will help others in the community find the solution more easily.
Thank you.