Iframe sso not working. Scenario 1: If I open First. And that denies to be shown in an IFrame. sso" with samesite Lax. Com and try to open Second. The iframe shows the login screen of the external site but not do the login. How: the backend responsible for rendering index. 0. com in Aug 14, 2025 · Because Microsoft Entra session cookies within an iframe are considered 3rd party cookies, certain browsers (for example Safari or Chrome in incognito mode) either block or clear these cookies by default. When the appA page is opened, the authentication loops with redirects and finally I get the “Too many redirects” message inside the iframe. But now I don't know why suddenly we can't open the external app the pop-up login will not be closed, we tried to inspect the iframe Dec 19, 2024 · On the backend I receive How to Reproduce? Use check-sso with iframe and localhost dev server page pointing to remote auth server (with HTTPS). kqq ftihjgn xfjh aald kvibt yiqbz yivy clizsr nuj fbylndxt