Sunday, April 03, 2011

Microsoft Exchange Server 2010 SP1 on Windows 2008 Server R2 post-installation gotchas: Installing Active Directory Web Services


Active Directory Web Services (ADWS) is an option to enable Web based API access to Active Directory; predominantly via PowerShell and Active Directory Administration Console (ADAC). Read:

This functionality by default is available on Domain Controllers running Windows 2008 R2 and is currently available as add-on for Windows 2003 and Windows 2008 systems (Download from:

NOTE: ADWS uses TCP port 9389; ensure firewalls to and from clients and ADWS-enabled Domain Controllers does not block this port !!!

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