Friday, March 02, 2012 7:01 PM
We recently did an Domain and Forest Function Level upgrade from Windows 2003 mix environment to Windows 2008 R2. Since the upgrade the XP client application is unable to connect to the server application the Windows 2008 Server, error message on the server :
Could not connect to DMOutlook: HRESULT = 80070721
FACILITY = FACILITY_WIN32
A security package specific error occurred.
If we try connecting using a Windows 7 client everything works fine, I also build and Windows 2003 Server and installed the application on it and it works fine. Please help
Saturday, March 03, 2012 2:23 PM
For that, please contact your application developer Technical Support for assistance.
Sunday, March 04, 2012 7:12 AMModerator
As Mr X said, it can be the application issue and its best bet to contact them first. I haven't heard just upgrade of the DFL/FFL bars XP client to connect to the DC and authenticate.
Awinish Vishwakarma - MVP-DSMy Blog: awinish.wordpress.com Disclaimer This posting is provided AS-IS with no warranties/guarantees and confers no rights.
Sunday, March 04, 2012 11:09 PM
Did you move the app to 2008, or was it there all the time?
Did you change around DNS addresses at anytime?
As others mentioned, changing forest and domain levels DO NOT affect communication. They only add cool new DC to DC communications and AD features that enhance DC funcitonality.
I also vote you contact the vendor.
MVP, MCT, MCITP Enterprise Administrator, MCTS Windows 2008 & Exchange 2007 & Exchange 2010, Exchange 2010 Enterprise Administrator, MCSE & MCSA 2003/2000, MCSA Messaging 2003
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Microsoft MVP - Directory Services
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This posting is provided AS-IS with no warranties or guarantees and confers no rights.
Monday, March 05, 2012 1:21 PM
No, nothing was changed except the FFL.