When trying to install Windows Azure Active Directory Module for Windows PowerShell the below error may occur even though Microsoft Online Services Sign-In Assistant version 7.0 is already installed.
"In order to install Windows Azure Active Directory Module for Windows PowerShell, you must have Microsoft Online Services Sign-In Assistant version 7.0 or greater installed on this computer"
According to the Windows Azure post below the issue seems to be related to the version of the Microsoft Online Services Sign-In they are currently running.
Install the Microsoft Online Services Sign-In Assistant for IT Professionals BETA:
Also, make sure that .NET Framework 3.5 is enable before attempting the reinstall of the module.