Symptom: When trying to install the Microsoft Online Services Sign-In Assistant (Windows Azure Active Directory Module for Windows PowerShell) to manage Office 365 or Windows Azure, you receive the following error:

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.

Solution: Try installing the latest version of the Microsoft Online SErvices Sign-In Assistant.

Microsoft Online Services Sign-In Assistant (IDCRL7) – 32 bit version
Microsoft Online Services Sign-In Assistant (IDCRL7) – 64 bit version

If you still receive the error after installing the Sign-In Assistant, make sure you are using the latest installer for the Microsoft Online Services Module for Windows Powershell.

Microsoft Online Services Module for Windows PowerShell (32-bit version)
Microsoft Online Services Module for Windows PowerShell (64-bit version)

If you still receive the error after trying both installers, try installing the Beta version of the Windows Azure Active Directory Module for Windows PowerShell.

Microsoft Online Services Sign-In Assistant for IT Professionals BETA

Notes: The first time I saw this issue was running Windows 8.1 on my Surface Pro 2.  I did not seem to see this issue on Windows 7.