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With Azure Active Directory (Azure AD) Multi-Factor Authentication (MFA), users can choose to receive an automated voice call at a phone number they register for verification. Malicious users could take advantage of this method by creating multiple accounts and placing phone calls without completing the MFA registration process. These numerous failed sign-ups could exhaust the allowed sign-up attempts, preventing other users from signing up for new accounts in your Azure AD B2C tenant. To help protect against these attacks, you can use Azure Monitor to monitor phone authentication failures and mitigate fraudulent sign-ups.
This topic covers how to enable number matching in Microsoft Authenticator push notifications to improve user sign-in security.
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>[!NOTE]
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>Number matching is a key security upgrade to traditional second factor notifications in Microsoft Authenticator. We will remove the admin controls and enforce the number match experience tenant-wide for all users of Microsoft Authenticator push notifications starting February 27, 2023.<br>
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>We highly recommend enabling number matching in the near term for improved sign-in security. Relevant services will begin deploying these changes after February 27, 2023 and users will start to see number match in approval requests. As services deploy, some may see number match while others don't. To ensure consistent behavior for all users, we highly recommend you enable number match for Microsoft Authenticator push notifications in advance.
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>Number matching is a key security upgrade to traditional second factor notifications in Microsoft Authenticator. We will remove the admin controls and enforce the number match experience tenant-wide for all users of Microsoft Authenticator push notifications starting May 8, 2023.<br>
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>We highly recommend enabling number matching in the near term for improved sign-in security. Relevant services will begin deploying these changes after May 8, 2023 and users will start to see number match in approval requests. As services deploy, some may see number match while others don't. To ensure consistent behavior for all users, we highly recommend you enable number match for Microsoft Authenticator push notifications in advance.
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## Prerequisites
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Although NPS doesn't support number matching, the latest NPS extension does support One-Time Password (OTP) methods such as the OTP available in Microsoft Authenticator, other software tokens, and hardware FOBs. OTP sign-in provides better security than the alternative **Approve**/**Deny** experience. Make sure you run the latest version of the [NPS extension](https://www.microsoft.com/download/details.aspx?id=54688).
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After Feb 27, 2023, when number matching is enabled for all users, anyone who performs a RADIUS connection with NPS extension version 1.2.2216.1 or later will be prompted to sign in with an OTP method instead.
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After May 8, 2023, when number matching is enabled for all users, anyone who performs a RADIUS connection with NPS extension version 1.2.2216.1 or later will be prompted to sign in with an OTP method instead.
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Users must have an OTP authentication method registered to see this behavior. Without an OTP method registered, users continue to see **Approve**/**Deny**.
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Prior to the release of NPS extension version 1.2.2216.1 after February 27, 2023, organizations that run any of these earlier versions of NPS extension can modify the registry to require users to enter an OTP:
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Prior to the release of NPS extension version 1.2.2216.1 after May 8, 2023, organizations that run any of these earlier versions of NPS extension can modify the registry to require users to enter an OTP:
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- 1.2.2131.2
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@@ -305,17 +305,19 @@ GET https://graph.microsoft.com/beta/authenticationMethodsPolicy/authenticationM
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### When will my tenant see number matching if I don't use the Azure portal or Graph API to roll out the change?
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Number match will be enabled for all users of Microsoft Authenticator push notifications after February 27, 2023. Relevant services will begin deploying these changes after February 27, 2023 and users will start to see number match in approval requests. As services deploy, some may see number match while others don't. To ensure consistent behavior for all your users, we highly recommend you use the Azure portal or Graph API to roll out number match for all Microsoft Authenticator users.
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Number match will be enabled for all users of Microsoft Authenticator push notifications after May 8, 2023. We had previously announced that we will remove the admin controls and enforce the number match experience tenant-wide for all users of Microsoft Authenticator push notifications starting May 8, 2023. After listening to customers, we will extend the availability of the rollout controls for a few more weeks.
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### Will the changes after February 27th, 2023, override number matching settings that are configured for a group in the Authentication methods policy?
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Relevant services will begin deploying these changes after May 8, 2023 and users will start to see number match in approval requests. As services deploy, some may see number match while others don't. To ensure consistent behavior for all your users, we highly recommend you use the Azure portal or Graph API to roll out number match for all Microsoft Authenticator users.
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No, the changes after February 27th won't affect the **Enable and Target** tab for Microsoft Authenticator in the Authentication methods policy. Administrators can continue to target specific users and groups or **All Users** for Microsoft Authenticator **Push** or **Any** authentication mode.
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### Will the changes after May 8th, 2023, override number matching settings that are configured for a group in the Authentication methods policy?
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When Microsoft begins protecting all organizations by enabling number matching after February 27th, 2023, administrators will see the **Require number matching for push notifications** setting on the **Configure** tab of the Microsoft Authenticator policy is set to **Enabled** for **All users** and can't be disabled. In addition, the **Exclude** option for this setting will be removed.
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No, the changes after May 8th won't affect the **Enable and Target** tab for Microsoft Authenticator in the Authentication methods policy. Administrators can continue to target specific users and groups or **All Users** for Microsoft Authenticator **Push** or **Any** authentication mode.
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When Microsoft begins protecting all organizations by enabling number matching after May 8th, 2023, administrators will see the **Require number matching for push notifications** setting on the **Configure** tab of the Microsoft Authenticator policy is set to **Enabled** for **All users** and can't be disabled. In addition, the **Exclude** option for this setting will be removed.
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### What happens for users who aren't specified in the Authentication methods policy but they are enabled for Notifications through mobile app in the legacy MFA tenant-wide policy?
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Users who are enabled for MFA push notifications in the legacy MFA policy will also see number match after February 27th, 2023. If the legacy MFA policy has enabled **Notifications through mobile app**, users will see number matching regardless of whether or not it's enabled on the **Enable and Target** tab for Microsoft Authenticator in the Authentication methods policy.
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Users who are enabled for MFA push notifications in the legacy MFA policy will also see number match after May 8th, 2023. If the legacy MFA policy has enabled **Notifications through mobile app**, users will see number matching regardless of whether or not it's enabled on the **Enable and Target** tab for Microsoft Authenticator in the Authentication methods policy.
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:::image type="content" border="true" source="./media/how-to-mfa-number-match/notifications-through-mobile-app.png" alt-text="Screenshot of Notifications through mobile app setting.":::
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### Can I opt out of number matching?
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Yes, currently you can disable number matching. We highly recommend that you enable number matching for all users in your tenant to protect yourself from MFA fatigue attacks. To protect the ecosystem and mitigate these threats, Microsoft will enable number matching for all tenants starting February 27, 2023. After protection is enabled by default, users can't opt out of number matching in Microsoft Authenticator push notifications.
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Yes, currently you can disable number matching. We highly recommend that you enable number matching for all users in your tenant to protect yourself from MFA fatigue attacks. To protect the ecosystem and mitigate these threats, Microsoft will enable number matching for all tenants starting May 8, 2023. After protection is enabled by default, users can't opt out of number matching in Microsoft Authenticator push notifications.
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Relevant services will begin deploying these changes after February 27, 2023 and users will start to see number match in approval requests. As services deploy, some may see number match while others don't. To ensure consistent behavior for all users, we highly recommend you enable number match for Microsoft Authenticator push notifications in advance.
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Relevant services will begin deploying these changes after May 8, 2023 and users will start to see number match in approval requests. As services deploy, some may see number match while others don't. To ensure consistent behavior for all users, we highly recommend you enable number match for Microsoft Authenticator push notifications in advance.
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### Does number matching only apply if Microsoft Authenticator is set as the default authentication method?
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If the user has a different default authentication method, there won't be any change to their default sign-in. If the default method is Microsoft Authenticator and the user is specified in either of the following policies, they'll start to receive number matching approval after February 27th, 2023:
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If the user has a different default authentication method, there won't be any change to their default sign-in. If the default method is Microsoft Authenticator and the user is specified in either of the following policies, they'll start to receive number matching approval after May 8th, 2023:
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- Authentication methods policy (in the portal, click **Security** > **Authentication methods** > **Policies**)
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- Legacy MFA tenant-wide policy (in the portal, click **Security** > **Multifactor Authentication** > **Additional cloud-based multifactor authentication settings**)
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Regardless of their default method, any user who is prompted to sign-in with Authenticator push notifications will see number match after February 27th, 2023. If the user is prompted for another method, they won't see any change.
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Regardless of their default method, any user who is prompted to sign-in with Authenticator push notifications will see number match after May 8th, 2023. If the user is prompted for another method, they won't see any change.
Copy file name to clipboardExpand all lines: articles/aks/auto-upgrade-cluster.md
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@@ -21,7 +21,7 @@ Part of the AKS cluster lifecycle involves performing periodic upgrades to the l
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Auto-upgrade provides a set once and forget mechanism that yields tangible time and operational cost benefits. By enabling auto-upgrade, you can ensure your clusters are up to date and don't miss the latest AKS features or patches from AKS and upstream Kubernetes.
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AKS follows a strict versioning window with regard to supportability. With properly selected auto-upgrade channels, you can avoid clusters falling into an unsupported version. For more on the AKS support window, see [Supported Kubernetes versions][supported-kubernetes-versions].
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AKS follows a strict versioning window with regard to supportability. With properly selected auto-upgrade channels, you can avoid clusters falling into an unsupported version. For more on the AKS support window, see [Alias minor versions][supported-kubernetes-versions].
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Even if using node image auto upgrade (which won't change the Kubernetes version), it still requires MC to be in a supported version
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> [!NOTE]
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> Cluster auto-upgrade only updates to GA versions of Kubernetes and will not update to preview versions.
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> [!NOTE]
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> With AKS, you can create a cluster without specifying the exact patch version. When you create a cluster without designating a patch, the cluster will run the minor version's latest GA patch. To Learn more [AKS support window][supported-kubernetes-versions]
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> [!NOTE]
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> Auto-upgrade requires the cluster's Kubernetes version to be within the [AKS support window][supported-kubernetes-versions], even if using the `node-image` channel.
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