Need to “force” sign out of a Microsoft account?

The following URLs should help:

Organisation account (e.g. Office 365 or other Microsoft services):

https://login.microsoftonline.com/logout.srf

• Your primary address
• onmicrosoft.com

Microsoft account (e.g. SkyDrive, Xbox, LIVE, Outlook.com, or other Microsoft services):

https://login.live.com/logout.srf

• Your primary address
• Hotmail
• Outlook.com