| title | description | ms.topic | ms.date | ms.custom |
|---|---|---|---|---|
Set up preview features in Azure subscription | Describes how to list, register, or unregister preview features in your Azure subscription for a resource provider. | how-to | 02/12/2025 | devx-track-azurepowershell, devx-track-azurecli |
This article shows you how to manage preview features in your Azure subscription. Preview features let you opt in to new functionality before it releases. Some preview features are available to anyone who wants to opt in. Other preview features require approval from the product team.
Azure Feature Exposure Control (AFEC) is available through the Microsoft.Features namespace. Preview features have the following format for the resource ID:
Microsoft.Features/providers/{resourceProviderNamespace}/features/{featureName}
To list, register, or unregister preview features in your Azure subscription, you need access to the Microsoft.Features/* actions. This permission is granted through the Contributor and Owner built-in roles. You can also specify the required access through a custom role.
You can list all the preview features and their registration states for an Azure subscription.
Note
The portal only shows a preview feature when the service that owns the feature explicitly opts in to the preview features management experience. If the feature you're looking for doesn't appear on the list, we recommend using Azure CLI and Azure PowerShell.
Sign in to the Azure portal.
In the search box, enter subscriptions and select Subscriptions.
:::image type="content" source="./media/preview-features/search.png" alt-text="Screenshot of Azure portal search box with 'subscriptions' entered.":::
Select the link for your subscription's name.
:::image type="content" source="./media/preview-features/subscriptions.png" alt-text="Screenshot of Azure portal with subscription selection highlighted.":::
From the left menu, under Settings, select Preview features.
:::image type="content" source="./media/preview-features/preview-features-menu.png" alt-text="Screenshot of Azure portal with Preview features menu option highlighted.":::
You see a list of available preview features and your current registration status.
:::image type="content" source="./media/preview-features/preview-features-list.png" alt-text="Screenshot of Azure portal displaying a list of preview features.":::
From Preview features, you can filter the list by name, State, or Type:
- Filter by name: Must contain text from a preview feature's name, not the Display name.
- State: Select the drop-down menu and choose a state. The portal doesn't filter by Unregistered.
- Type: Select the drop-down menu and choose a type.
:::image type="content" source="./media/preview-features/filter.png" alt-text="Screenshot of Azure portal with filter options for preview features.":::
To list all the subscription's preview features, use the az feature list command.
The default output for Azure CLI is JSON. For more information about other output formats, see Output formats for Azure CLI commands.
az feature list { "id": "/subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e/providers/Microsoft.Features/providers/Microsoft.Compute/features/InGuestPatchVMPreview","name": "Microsoft.Compute/InGuestPatchVMPreview", "properties": { "state": "NotRegistered" }, "type": "Microsoft.Features/providers/features" }To filter the output for a specific resource provider, use the namespace parameter. In this example, the output parameter specifies a table format.
az feature list --namespace Microsoft.Compute --output table Name RegistrationState ------------------------------------------------- ------------------- Microsoft.Compute/AHUB Unregistered Microsoft.Compute/AllowManagedDisksReplaceOSDisk Registered Microsoft.Compute/AllowPreReleaseRegions Pending Microsoft.Compute/InGuestPatchVMPreview NotRegistered To filter output for a specific preview feature, use the az feature show command.
az feature show --name InGuestPatchVMPreview --namespace Microsoft.Compute --output table Name RegistrationState --------------------------------------- ------------------- Microsoft.Compute/InGuestPatchVMPreview NotRegistered To list all the subscription's preview features, use the Get-AzProviderFeature cmdlet.
Get-AzProviderFeature -ListAvailable FeatureName ProviderName RegistrationState ----------- ------------ ----------------- betaAccess Microsoft.AAD NotRegistered previewAccess Microsoft.AAD Registered tipAccess Microsoft.AAD Pending testAccess Microsoft.AAD Unregistered To filter the output for a specific resource provider, use the ProviderNamespace parameter. The default output shows only the registered features. To display all preview features for a resource provider, use the ListAvailable parameter with the ProviderNamespace parameter.
Get-AzProviderFeature -ProviderNamespace "Microsoft.Compute" -ListAvailable FeatureName ProviderName RegistrationState ----------- ------------ ----------------- AHUB Microsoft.Compute Unregistered AllowManagedDisksReplaceOSDisk Microsoft.Compute Registered AllowPreReleaseRegions Microsoft.Compute Pending InGuestPatchVMPreview Microsoft.Compute NotRegistered You can filter the output for a specific preview feature using the FeatureName parameter.
Get-AzProviderFeature -FeatureName "InGuestPatchVMPreview" -ProviderNamespace "Microsoft.Compute" FeatureName ProviderName RegistrationState ----------- ------------ ----------------- InGuestPatchVMPreview Microsoft.Compute NotRegistered To expose more functionality for a resource provider, register a preview feature in your Azure subscription. Some preview features require approval.
After you register a preview feature in your subscription, you see one of two states: Registered or Pending.
- For a preview feature that doesn't require approval, the state is Registered.
- If a preview feature requires approval, the registration state is Pending. You must request approval from the Azure service offering the preview feature. Usually, you request access through a support ticket.
- To request approval, submit an Azure support request.
- After the registration is approved, the preview feature's state changes to Registered.
Some services require other methods, such as email, to get approval for pending requests. Check announcements about the preview feature for information about how to get access.
Sign in to the Azure portal.
In the search box, enter subscriptions and select Subscriptions.
Select the link for your subscription's name.
From the left menu, under Settings select Preview features.
Select the link for the preview feature you want to register.
Select Register.
:::image type="content" source="./media/preview-features/register.png" alt-text="Screenshot of Azure portal with Register button for a preview feature.":::
Select OK.
The Preview features screen refreshes and the preview feature's State is displayed.
To register a preview feature, use the az feature register command.
az feature register --name InGuestPatchVMPreview --namespace Microsoft.Compute { "id": "/subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e/providers/Microsoft.Features/providers/Microsoft.Compute/features/InGuestPatchVMPreview","name": "Microsoft.Compute/InGuestPatchVMPreview", "properties": { "state": "Registering" }, "type": "Microsoft.Features/providers/features" }To view the registration's status, use the az feature show command.
az feature show --name InGuestPatchVMPreview --namespace Microsoft.Compute --output table Name RegistrationState --------------------------------------- ------------------- Microsoft.Compute/InGuestPatchVMPreview Registered Note
When you run the register command, it returns a message that suggests running az provider register --namespace <provider-name> after the feature is registered to propagate the changes.
To register a preview feature, use the Register-AzProviderFeature cmdlet.
Register-AzProviderFeature -FeatureName "InGuestPatchVMPreview" -ProviderNamespace "Microsoft.Compute" FeatureName ProviderName RegistrationState ----------- ------------ ----------------- InGuestPatchVMPreview Microsoft.Compute Registering To view the registration's status, use the Get-AzProviderFeature cmdlet.
Get-AzProviderFeature -FeatureName "InGuestPatchVMPreview" -ProviderNamespace "Microsoft.Compute" FeatureName ProviderName RegistrationState ----------- ------------ ----------------- InGuestPatchVMPreview Microsoft.Compute Registered When you finish using a preview feature, unregister it from your Azure subscription. You might notice two different statuses after unregistering the feature. If you unregister through the portal, the status is Not registered. If you unregister through Azure CLI, PowerShell, or REST API, the status is Unregistered. The status is different because the portal deletes the feature registration, but the commands unregister the feature. In both cases, the feature is no longer available in your subscription. You can opt in to the feature again by re-registering it.
You can unregister preview features from Preview features. The State changes to Not registered.
Sign in to the Azure portal.
In the search box, enter subscriptions and select Subscriptions.
Select the link for your subscription's name.
From the left menu, under Settings, select Preview features.
Select the link for the preview feature you want to unregister.
Select Unregister.
:::image type="content" source="./media/preview-features/unregister.png" alt-text="Screenshot of Azure portal with Unregister button for a preview feature.":::
Select OK.
To unregister a preview feature, use the az feature unregister command. The RegistrationState state changes to Unregistered.
az feature unregister --name InGuestPatchVMPreview --namespace Microsoft.Compute { "id": "/subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e/providers/Microsoft.Features/providers/Microsoft.Compute/features/InGuestPatchVMPreview","name": "Microsoft.Compute/InGuestPatchVMPreview", "properties": { "state": "Unregistering" }, "type": "Microsoft.Features/providers/features" }To view the unregistration's status, use the az feature show command.
az feature show --name InGuestPatchVMPreview --namespace Microsoft.Compute --output table Name RegistrationState --------------------------------------- ------------------- Microsoft.Compute/InGuestPatchVMPreview Unregistered Note
When you run the unregister command, it returns a message that suggests running az provider register --namespace <provider-name> after the feature is registered to propagate the changes.
To find Unregistered preview features, use the following command. Replace <ResourceProvider.Name> with a provider name such as Microsoft.Compute.
The following example displays an Unregistered preview feature for the Microsoft.Compute resource provider.
az feature list --namespace <ResourceProvider.Name> --query "[?properties.state=='Unregistered'].{Name:name, RegistrationState:properties.state}" --output table Name RegistrationState --------------------------------------- ------------------- Microsoft.Compute/InGuestPatchVMPreview Unregistered To unregister a preview feature, use the Unregister-AzProviderFeature cmdlet. The RegistrationState state changes to Unregistered.
Unregister-AzProviderFeature -FeatureName "InGuestPatchVMPreview" -ProviderNamespace "Microsoft.Compute" FeatureName ProviderName RegistrationState ----------- ------------ ----------------- InGuestPatchVMPreview Microsoft.Compute Unregistering To view the unregistration's status, use the Get-AzProviderFeature cmdlet.
Get-AzProviderFeature -FeatureName "InGuestPatchVMPreview" -ProviderNamespace "Microsoft.Compute" FeatureName ProviderName RegistrationState ----------- ------------ ----------------- InGuestPatchVMPreview Microsoft.Compute Unregistered The following example displays an Unregistered preview feature for the Microsoft.Compute resource provider.
Get-AzProviderFeature -ProviderNamespace "Microsoft.Compute" -ListAvailable | Where-Object { $_.RegistrationState -eq "Unregistered" } FeatureName ProviderName RegistrationState ----------- ------------ ----------------- InGuestPatchVMPreview Microsoft.Compute Unregistered You can remediate subscriptions to register to a preview feature if they're not already registered using a built-in policy definition. When you add new subscriptions to an existing tenant, they aren't automatically registered.
- To use REST API calls and list, register, or unregister preview features, see the Features documentation.
- For more information about how to register a resource provider, see Azure resource providers and types.
- For a list that maps resource providers to Azure services, see Resource providers for Azure services.
