Microsoft Office Tutorials and References
In Depth Information
Single sign-on requirements
Figure 3-13 Office 365 logon portal redirecting you to sign in through the AD FS server.
● Internet Information Server (IIS) must be installed.
● Deployment of an AD FS 2.0 or above proxy server if you plan to allow users to
connect from outside the company network. While an AD FS proxy is recommended, it is
not required. Furthermore, the AD FS proxy and AD FS server cannot be set up on the
AD requirements to implement AD FS 2.0 for Office 365 can be more complex and
impactful. The following are the AD requirements:
● AD with a minimum functional level of Windows Server 2003 in mixed or native
● AD default UPN must be identical to the domain name you added in the preceding
For more information about AD FS requirements, see http://technet.microsoft.com/en-us/