Azure Active Directory Pass-through Authentication: Current limitations
The following scenarios are supported:
- User sign-ins to web browser-based applications.
- User sign-ins to Outlook clients using legacy protocols such as Exchange ActiveSync, EAS, SMTP, POP and IMAP.
- User sign-ins to legacy Office client applications and Office applications that support modern authentication: Office 2013 and 2016 versions.
- User sign-ins to legacy protocol applications such as PowerShell version 1.0 and others.
- Azure AD joins for Windows 10 devices.
- App passwords for Multi-Factor Authentication.
The following scenarios are not supported:
- Detection of users with leaked credentials.
- Azure AD Domain Services needs Password Hash Synchronization to be enabled on the tenant. Therefore tenants that use Pass-through Authentication only don't work for scenarios that need Azure AD Domain Services.
- Pass-through Authentication is not integrated with Azure AD Connect Health.
- Signing in to Azure AD joined (AADJ) devices with a temporary or expired password is not supported for Pass-through authentication users. The error "the sign-in method you're trying to use isn't allowed" will appear. These users must sign in to a browser to update their temporary password.
As a workaround for unsupported scenarios only (except Azure AD Connect Health integration), enable Password Hash Synchronization on the Optional features page in the Azure AD Connect wizard.
Enabling Password Hash Synchronization gives you the option to failover authentication if your on-premises infrastructure is disrupted. This failover from Pass-through Authentication to Password Hash Synchronization is not automatic. You'll need to switch the sign-in method manually using Azure AD Connect. If the server running Azure AD Connect goes down, you'll require help from Microsoft Support to turn off Pass-through Authentication.
- Quick start: Get up and running with Azure AD Pass-through Authentication.
- Migrate from AD FS to Pass-through Authentication - A detailed guide to migrate from AD FS (or other federation technologies) to Pass-through Authentication.
- Smart Lockout: Learn how to configure the Smart Lockout capability on your tenant to protect user accounts.
- Technical deep dive: Understand how the Pass-through Authentication feature works.
- Frequently asked questions: Find answers to frequently asked questions about the Pass-through Authentication feature.
- Troubleshoot: Learn how to resolve common problems with the Pass-through Authentication feature.
- Security deep dive: Get deep technical information on the Pass-through Authentication feature.
- Azure AD Seamless SSO: Learn more about this complementary feature.
- UserVoice: Use the Azure Active Directory Forum to file new feature requests.
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