One of the great benefits of running Windows 8 on multiple PC’s you own, you can easily sync common settings across computers such as passwords for apps, websites, networks in addition to other benefits such as themes, backgrounds and color schemes. To do this, you need to trust your Windows PC.
Start by launching Change PC Settngs (Windows + I)
Under PC settings, click Users tab
On the right hand side of the screen click Trust this PC
Sign into your Microsoft account which can be either a Windows Live ID, Hotmail, MSN or Outlook.com
Click Next to Confirm your computer as a trusted PC or you can visit a existing trusted PC and do the confirmation there from http://accounts.live.com/p.
The PC’s you sign in with your Microsoft Account from now on will be a lot more seamless.