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You cannot use a UPN-formatted user name to log on to a Windows Server 2003-based FTP server that is running IIS 6.0 if the domain controller for authentication is running Windows Server 2008Article ID: 956114 - View products that this article applies to. On This PageSYMPTOMSConsider the following scenario:
CAUSEThis issue occurs because the Windows Server 2008-baesd domain controller cannot authenticate the user name in UPN format froman FTP server that is running IIS 6.0. RESOLUTIONHotfix informationA supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix. Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: http://support.microsoft.com/contactus/?ws=support Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.
(http://support.microsoft.com/contactus/?ws=support)
PrerequisitesTo apply this hotfix, the computer must have Windows Server 2003 Service Pack 1 or Windows Server 2003 Service Pack 2 installed.Restart requirementYou have to restart the computer after you apply this hotfix.Hotfix replacement informationThis hotfix does not replace any other previously released hotfixes.File informationThe English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.Windows Server 2003, x86-based versionsCollapse this table
Windows Server 2003, Itanium-based versionsCollapse this table
Windows Server 2003, x64-based versionsCollapse this table
WORKAROUNDTo work around the issue, supply the user name in the traditional "domain\username" format instead of the UPN format. STATUSMicrosoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. MORE INFORMATION
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
243280
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/243280/
)
Users Can Log On Using User Name or User Principal Name
824684
(http://support.microsoft.com/kb/824684/
)
Description of the standard terminology that is used to describe Microsoft software updates
PropertiesArticle ID: 956114 - Last Review: October 8, 2011 - Revision: 2.0 APPLIES TO
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