Hi!
In our Windows domain we use Azure AD Connect for integration of our on-premises AD with Azure AD (password hash synchronization with single sign-on enabled).
Users' IE settings include the following sites in the Intranet zone:
autologon.microsoftazuread-sso.com
OurSite.sharepoint.com
Single sing-on to our SharePoint Online site works fine for domain users (from Internet Explorer 11 and Chrome).
But when users try to open documents on the SharePoint Online library with Office 2013 desktop applications, they are asked for their credentials.
How to achieve seamless sing-on also for Office 2013 applications?
We use Office 2013 Standard and Pro Plus with SP1 (and all updates installed) on Windows 10 Pro. v. 1703.
-- rpr.