@Mont Welcome to Microsoft Q & A Community Forum. Glad to know that you have resolved the issue. For the benefit of the community, adding some information and references.
- To monitor guest operating systems, you need to enable VM Insights solution which in turn installs Log Analytics Agent and Dependency Agent to collect metrics. For more information, refer this document.
- The Azure Monitor agent replaces the Log Analytics agent when it fully supports Azure Monitor, Microsoft Defender for Cloud, and Microsoft Sentinel. Until that time, it can be installed with the Log Analytics agent to send performance data from the guest operating system of machines to Azure Monitor Metrics. This configuration allows you to evaluate this data with metrics explorer and use metric alerts. For more information, check out this document.