Performing manual upgrades on Virtual Machine Scale Sets

If you have the upgrade policy set to manual, any changes made to the scale set model won't be applied automatically. You need to manually trigger upgrades on each individual virtual machine. The manual upgrade functionality updates the selected instances according to the virtual machine configuration set in the scale set profile.

Note

To update the image reference version during an upgrade, register the following feature flag:
Register-AzProviderFeature -FeatureName ImageReferenceUpgradeForVmoVMs -ProviderNamespace Microsoft.Compute

Select the Virtual Machine Scale Set you want to perform instance upgrades on. In the menu under Settings, select Instances and select the instances you want to upgrade. Once selected, click the Upgrade option.

Screenshot showing how to perform manual upgrades using the Azure portal.

Next steps

You can also perform common management tasks on Virtual Machine Scale Sets using the Azure CLI or Azure PowerShell.