Note: This article was originally published in 2013. Some steps, commands, or software versions may have changed. Check the current Microsoft Online documentation for the latest information.

This article explains login.microsoftonline.com and why it matters for your environment.

What is http://login.microsoftonline.com?

The (http://en.wikipedia.org/wiki/Uniform_resource_locator “Uniform resource locator”): http://login.microsoftonline.com is generally used by applications like the (http://www.microsoft.com/WINDOWS “Windows”) Azure Active Directory Sync tool (to sync with (http://www.microsoft.com “Microsoft”) online (http://www.microsoft.com/windowsazure/ “Microsoft Azure”) AD service) to authenticate against those services.