If you have an online account, such as an e‑mail account, you can link that account with your Windows user account. Linking these accounts provides the following benefits:
People can share files with you on a homegroup using your online ID instead of having to create a Windows user account for you on their computer.
You can use your online ID to access your information on other computers on a network, such as accessing files on a home computer from your work computer.
Linking your account is a two-part process. First, you need to add your online ID provider, and then you need to link your online ID with your Windows user account.
To use this feature, the computers that you want to use to share files must be part of a homegroup. For more information about homegroups, search for "homegroup" in Help and Support.
The ability to link your online IDs with your Windows user account is not included in Windows Server 2008 R2.
Open User Accounts by clicking the Start button , clicking Control Panel, clicking User Accounts and Family Safety (or clicking User Accounts, if you are connected to a network domain), and then clicking User Accounts.
Click Link online IDs.
Click Add an online ID provider.
Click your online ID provider in the list, and then follow the instructions.
Next to the online ID provider that you want to link your user account with, click Link Online ID.
Type your user name and password for the online ID, click Sign in, and then click OK.
For information about sharing files, see Share files with someone.