Article ID: 950138 - Last Review: October 7, 2008 - Revision: 3.0 You are prompted for your credentials three times and you receive an error message when you use the Outlook Anywhere feature to connect to an Exchange Server 2007 Service Pack 1–based server that is running Windows Server 2008SYMPTOMSWhen you use the Outlook Anywhere feature to connect to an
Exchange Server 2007 Service Pack 1–based server that is running Windows Server
2008, you are prompted for your credentials three times. Additionally, you may
receive the following error message: The connection to Microsoft
Exchange is unavailable. Microsoft Outlook must be online or connected to
complete this action. CAUSEWindows Server 2008 prefers to use IPv6 protocol instead of
the IPv4 protocol. The Exchange 2007 server does not listen to some specific
ports on IPv6 that are used for Outlook Anywhere. Therefore, this problem occurs. RESOLUTIONTo resolve this problem, download Update Rollup 4 for Exchange Server 2007 Service Pack 1. Then, install the update on the Exchange server.
For more information about how to download Update Rollup 4 for Exchange Server 2007 Service Pack 1, click the following article number to view the article in the Microsoft Knowledge Base:
952580
(http://support.microsoft.com/kb/952580/
)
Description of Update Rollup 4 for Exchange Server 2007 Service Pack 1
MORE INFORMATIONFor more information about Outlook Anywhere, visit the
following Microsoft Web site: http://technet.microsoft.com/en-us/library/cc540453(EXCHG.80).aspx
(http://technet.microsoft.com/en-us/library/cc540453(EXCHG.80).aspx)
STATUSMicrosoft
has confirmed that this is a problem in the Microsoft products that are listed
in the "Applies to" section. | Article Translations
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