VM Health feature included in Azure monitor for VMs is now available for VMs that are running on Windows 2012 R2 and 2019. Additionally, VM Health feature is also available in cases where the associated workspace is in SEA (South East Asia), UKS (UK South), and CCAN (Canada Central) regions. If you observe that health information is not showing up in the UI for the VMs which were onboarded to Azure Monitor for VMs earlier despite satisfying the above criteria, please try on-boarding again from the Health tab of Azure Monitor for VMs.