Sign-in & Login Problems

Fix Office Automatic Sign-In with Azure AD Connect and Seamless SSO

Rana Garcia Oct 12, 2026 869 views

Question details

Users with synchronized Active Directory accounts are repeatedly prompted for Office credentials instead of being automatically signed in.

Fix Office Automatic Sign-In with Azure AD Connect and Seamless SSO

Product: Microsoft Office
Device & OS: Windows
Scenario: Attempting to use Seamless Single Sign-On (SSO) on domain-joined computers to access Office desktop applications automatically.
Observed behavior: Office desktop applications repeatedly prompt users for their credentials even though Azure AD Connect and Seamless SSO are already configured in the environment.

Before you start

Ensure your computer is joined to the domain and that you have the necessary administrator privileges to modify Internet Options and Windows security zones.

Solution 1Recommended

Add Autologon URL to Local Intranet Zone

Configure Windows Internet Settings to trust the Microsoft Azure AD Seamless SSO URL so credentials can pass through automatically.

When the Azure AD SSO URL is not explicitly trusted by the Local Intranet zone, Windows restricts the automatic passing of user credentials to Office applications. Adding this URL directly resolves the security block and restores seamless login.

Open Internet Options

Open the Windows Start menu, type 'Internet Options', and press Enter to launch the Internet Properties dialog box.

Navigate to the Security Tab

Click on the 'Security' tab at the top of the window, and then select the 'Local intranet' zone icon.

Access Site Settings

Click the 'Sites' button, and in the resulting dialog, click the 'Advanced' button to manage trusted intranet URLs.

Add the Azure AD SSO URL

In the 'Add this website to the zone' field, type exactly 'https://autologon.microsoftazuread-sso.com' and click 'Add'.

Save and Test

Click 'Close', then click 'OK' on all remaining windows to apply the changes. Restart your Office applications to verify that the automatic sign-in now works.

Add Autologon URL to Local Intranet Zone

Domain-Wide Application: For enterprise environments, IT administrators can deploy this Local Intranet zone setting across all domain-joined computers efficiently using Group Policy Objects (GPO).

Solution 2

Verify Active Directory and Domain Requirements

Ensure your environment meets the strict prerequisites for Azure AD Seamless SSO to function properly.

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Frequently Asked Questions

Why does Office keep prompting for a password with Seamless SSO enabled?

This usually happens because the Azure AD Seamless SSO URL is not recognized as a trusted site by the Windows Local Intranet zone, preventing the operating system from automatically passing your domain credentials to the Office desktop applications.

Can I deploy the Local Intranet zone fix to multiple computers at once?

Yes, IT administrators can use Group Policy Objects (GPO) to push the 'https://autologon.microsoftazuread-sso.com' URL to the Local Intranet zone for all domain-joined devices across the organization.

What should I do if the issue persists after updating Internet Settings?

Verify that the computer is properly domain-joined and that your user accounts are actively synchronized via Azure AD Connect. If the issue remains outside your local troubleshooting scope, you may need to consult your IT department or the Microsoft Q&A forums for advanced diagnostics.

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