This article has not yet been verified against Umbraco 8.
The concepts and code examples might not work if you are running Umbraco 8.0 or a later version. If you are using Umbraco 7, this article is perfect for you!
You are more than welcome to report any issues found on the Documentation Issue Tracker.
Authenticating with Active Directory credentials
Umbraco 7.5.0+ comes with a built-in
IBackOfficeUserPasswordChecker for Active Directory:
Find out how to activate the ActiveDirectoryBackOfficeUserPasswordChecker