Unable to log in to ArcGIS Online enterprise account using Active Directory Federation Services (AD FS) as multifactor authentication when using Windows 10 and the Microsoft Edge browser.
Use a different browser within a Windows 10 machine.Enter the entire name of the enterprise account. e.g. '<a href="http://ess-enterprise.maps.arcgis.com" target="_blank">ess-enterprise.maps.arcgis.com</a>'.