Windows 7 + Outlook 2007 + Exchange 2007 = EPIC FAIL -- Connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action. RRS feed

  • Question

  • I have searched for some time now and have not found a solution.

    Outlook 2007 on Windows 7
    Exchange 2007 running on Windows Server 2003 R2 x64

    I am working with a fresh install of Windows 7 and Office 2007.  I am the test case for upgrading from XP to Windows 7.

    When I attempt to start Outlook, I fail with "The name cannot be resolved.  The connection to Microsoft Exchange is unavailable.  Outlook must be online or connected to complete this action".

    I can ping the exchange server.
    I have disabled the Windows firewall.
    I have looked at http://support.microsoft.com/kb/913843
    I have looked at http://support.microsoft.com/kb/927481
    I have tried everything in http://social.technet.microsoft.com/Forums/en/w7itproappcompat/thread/a501c9c1-cc29-48ab-af03-fffe531fbde0
    I have looked at lots of other articles.

    Everything works from from our XP clients.

    The Exchange Server is fully patched.
    Windows 7 is fully patched.
    Office 2007 is fully patched.

    If anyone has any more ideas or a solution I would appreciate it.


    -- Gary

    Thursday, February 11, 2010 11:06 PM

All replies

  • I finally tracked down what was causing my issue.  The "Microsoft Exchange System Attendant Manager" was not running on our Exchange Server.

    This service is set to start automatically on our Exchange Sever but fails to do so.  After manually starting it I was able to get Outlook to connect.

    -- Gary
    Friday, February 12, 2010 5:19 PM
  • I've got exactly this isue, and have spent about 5 hours trying to fix it. Where can I find/run the Microsoft Exchange System Attendant Manager please?

    • Proposed as answer by PH Chua Thursday, June 10, 2010 10:19 AM
    Saturday, February 27, 2010 9:50 AM
  • Dear all,


          After Vista upgraded to sp2 and windows 7 lunch. The protocol type for Outlook 2007 was change to UDP instead of TCP. Change it at windows firewall with advanced security. Untick "Encrypt data between Microsoft Office Outlook and Microsoft Exchange" under account setting - security.

    Thank you!

    Thursday, June 10, 2010 10:28 AM