Mainly Exchange 2016 uses different methods compared to 2010. So it’s often suggested to change the settings to NTLM. What happens if Outlook uses Outlook Anywhere? It “opens” the RPC Website. Let’s check the Authentication settings for the RPC Website: Open IIS Manager and go to Sites => Default Web Site => RPC => Authentication. To do so, right-click on your email account’s Inbox in Outlook 2016 (some older versions of Outlook may require you to right-click on the email address itself) and then select IMAP Folders from the popup list. We know what it is. We’ve heard the name and you probably know someone that has migrated from their on-premises Exchange organization to it. And if your company is one of those who has migrated to Office 365, then you are probably aware of the one struggle that everyone who’s ever moved to 365 has had to deal with – saving credentials for Outlook. Now for those who may be curious about moving to Office 365, you are probably wondering what I’m talking about. To catch you up to speed, when users connect to Office365 via Outlook, they cannot utilize ADFS to do a true Single Sign On (SSO) experience. Instead, Outlook uses the Outlook Anywhere function, and unfortunately, requires the use of Basic Authentication, meaning you must enter in a username and password every time, unless you of course, cache the credentials. For a long time, most of my clients would ask me “is Microsoft ever going to change this?”, and would state “well this defeats the purpose of utilizing ADFS for true SSO.” And I agree, but now, it seems like Microsoft’s ears were ringing, because the wish of using Outlook with Office 365 and not having to cache credentials has been granted! But how does this work, and what limitations are there? I’ll explain in this article. Modern Authentication – What is it? Modern Authentication brings Active Directory Authentication Library (ADAL)-based sign-in to Office client apps across platforms. This enables sign-in features such as Multi-Factor Authentication (MFA), SAML-based third-party Identity Providers with Office client applications, smart card and certificate-based authentication, and it removes the need for Outlook to use the basic authentication protocol. The chart below shows the availability of Modern Authentication across Office apps: Office client application Windows Mac OS X Windows Phone iOS Android Office clients Available now for Office 2013 and Office 2016. ![]() Office 2016 Mac Preview supports ADAL including Word, Excel, PowerPoint and OneNote. OneNote was released with ADAL in 2014. Available now. Word, Excel and PowerPoint are available now. For Android phones: Word, Excel and PowerPoint are available now. For Android tablets: Word, Excel and PowerPoint are coming soon. Skype for Business (formerly Lync) Included in Office client. Available now*. Available now*. Outlook Included in Office client. Available now. Available now. Available now. OneDrive for Business Included in Office client. OneDrive for Business Sync is TBD. Available now for Windows Phone 8.1. OneDrive for Business is available now. OneDrive for Business is available now. Legacy clients There are no plans for or to support ADAL-based authentication. There are no plans for Office for Mac 2011 to support ADAL-based authentication. There are no plans for Office on Windows Phone 7 to support ADAL-based authentication. There are no plans to enable older Outlook iOS clients.
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