Windows Live ID Sign-in Assistant 6.5
The Windows Live™ ID Sign-in Assistant 6.5 installs the Windows Live ID online provider for 
Benefits
Through the online provider, the Sign-in Assistant helps a Windows 7 application running on one computer identify and communicate with other computers that are associated with the same Windows Live ID. Just by linking your Windows Live ID to the user account on each Windows 7 computer you own, you enable those computers to identify each other and work together more easily than has been possible in the past. Applications can take advantage of this capability to support scenarios as in the following example: On his homegroup, Bob wants to share certain documents with his wife but not with his kids. Simply by specifying his wife’s Windows Live ID user name, Bob can give his wife exclusive permission to access documents on his computer.
The Sign-in Assistant will also turn on new features for users of Windows Live ID services. Stay tuned to the Windows Live ID blog for future announcements.
Downloading the Sign-in Assistant means you agree to the privacy statement and Windows Live ID Sign-in Assistant 6.5 License Agreement. You'll get future updates to the Sign-in Assistant and other Microsoft programs from Microsoft Update.
Privacy statement
Microsoft Update Information
Supported Operating Systems: Windows 7; Windows Server 2008; Windows Vista; Windows Vista 64-bit Editions Service Pack 1; Windows XP; Windows XP 64-bit
Windows XP (Service Pack 2 and 3)
Windows Vista (Service Pack 1 and 2)
Windows 7
Windows Server 2008 (Service Pack 2)
Windows 7 Server (Windows Server 2008 R2)