Then the "about:blank" page will no longer load and this issue will no longer occur. Provide a phone number for multi-factor authentication (MFA). To work around this issue, specify the src attribute for the Iframe element as follows. Microsoft 365 - Enable Two-Factor Authentication for Microsoft 365 & Remote Desktop Gateway 1. Based on the following information from the page you linked we should be covered. The lack of the src attribute causes the embedded browser to load "about:blank" in the IFRAME.īecause data isn't based on HTTPS, Office can't allow such navigation to occur. We have Duo integrated with Azure AD and Conditional Access policies. It causes that the iFrame loads the URL "about:blank" (The Iframe src attribute is set later in the Duo-Web-v2.js file).įor security reasons, Office doesn't allow navigation to any non-https end point within the web view that is shown to capture user credentials. Notice that the src attribute of the Iframe element is missing. When the DUO iframe is loaded from the ".html" file, the code is like: For more info, please contact your help desk.Įven though the custom login page may render correctly from web browsers, the Office application doesn't render the HTML property of the custom login page. Your organization's policies are preventing us from completing this action for you. And you receive the following error message: This articles describes what you will have to do once your account has been enabled with Multi-Factor Authentication for email and other Office 365 products. When you use a custom multifactor authentication login page that uses DUO API with the Office application, the login page will flicker for a moment before it disappears. The weirdness is that one user can see that. ![]() We have the 'security defaults' set and when you go into the Per-User MFA we only change our employees to Enforced. ![]() This article was written by Warren Rath, Support Escalation Engineer. There has been some fairly odd behaviors with access and they are the only one of our clients that are experiencing this.
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