Group Policies Are Not Applied When a User Appends a Period to Their UPN Credentials During Logon

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When a user logs on to the domain, domain group policies or organizational-unit-level group policies are not applied to that user. When you view the Userenv.log, you notice information similar to the following:
USERENV(f0.d4) 16:40:44:166 MyGetUserName:  GetUserNameEx failed with 1908.   USERENV(f0.d4) 16:40:44:206 MyGetUserName:  Retrying call to GetUserNameEx in 1/2 second.
This problem occurs when both of the following conditions exist:
  • The user logs on to the domain, specifies an alternative UPN suffix, and types their credentials in the user principal name (UPN) format (for example,

  • The user appends a period (dot) to their credentials. For example, instead of typing
    the user types the following:
If the user appends a period to the UPN name that specifies the alternative UPN suffix, the domain controller for that user cannot be located. Error code 1908 in the Userenv.log file corresponds to the following:

Hotfix Information

A 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.

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, submit a request to 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: 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.


You must be running Windows 2000 Service Pack 3 (SP3) to install this hotfix. For additional information about how to obtain the latest Windows 2000 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack

Hotfix Replacement Information

This hotfix does not replace any other hotfixes.

File Information

The English version of this fix has the file attributes (or later) 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 tool in Control Panel.
   Date         Time   Version            Size    File name   --------------------------------------------------------------   11-Jun-2003  19:18  5.0.2195.6748     124,688  Adsldp.dll          11-Jun-2003  19:18  5.0.2195.6748     132,368  Adsldpc.dll         11-Jun-2003  19:18  5.0.2195.6748      63,760  Adsmsext.dll        11-Jun-2003  19:18  5.0.2195.6743     381,200  Advapi32.dll        06-Jun-2003  19:53  5.0.2195.6753      69,392  Browser.dll         11-Jun-2003  19:18  5.0.2195.6680     134,928  Dnsapi.dll          11-Jun-2003  19:18  5.0.2195.6663      92,432  Dnsrslvr.dll        11-Jun-2003  19:18  5.0.2195.6753      47,376  Eventlog.dll        11-Jun-2003  19:18  5.0.2195.6747     148,240  Kdcsvc.dll          20-May-2003  18:49  5.0.2195.6747     205,072  Kerberos.dll        26-Mar-2003  21:37  5.0.2195.6695      71,888  Ksecdd.sys   28-May-2003  20:39  5.0.2195.6749     509,712  Lsasrv.dll          28-May-2003  20:39  5.0.2195.6749      33,552  Lsass.exe           05-Apr-2003  00:12  5.0.2195.6680     117,520  Msv1_0.dll          11-Jun-2003  19:18  5.0.2195.6601     311,568  Netapi32.dll        11-Jun-2003  19:18  5.0.2195.6695     371,984  Netlogon.dll        11-Jun-2003  19:18  5.0.2195.6697   1,040,144  Ntdsa.dll           11-Jun-2003  19:18  5.0.2195.6742     392,464  Samsrv.dll          11-Jun-2003  19:18  5.0.2195.6737     131,344  Scecli.dll          11-Jun-2003  19:18  5.0.2195.6737     306,448  Scesrv.dll          29-May-2003  23:22  5.0.2195.6748   4,576,256  Sp3res.dll          11-Jun-2003  19:18  5.0.2195.6601      51,472  W32time.dll         16-Aug-2002  13:32  5.0.2195.6601      57,104  W32tm.exe           11-Jun-2003  19:18  5.0.2195.6741     126,224  Wldap32.dll      
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
For additional information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:
816915 New Naming Schema for Microsoft Windows Hotfix Packages

Article ID: 821102 - Last Review: 02/27/2014 18:43:53 - Revision: 2.5

Microsoft Windows 2000 Advanced Server SP3, Microsoft Windows 2000 Service Pack 3, Microsoft Windows 2000 Service Pack 3

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