Microsoft KB Archive/826452

= You Receive an &quot;Account Unknown&quot; Message When You Assign a Permission to a File or You Add a Member to a Group =

Article ID: 826452

Article Last Modified on 2/21/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Advanced Server

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SYMPTOMS
When you try to assign a permission to a file or to add a member to a group, an Object Picker dialog box may display the message &quot;Account unknown.&quot; You may also receive the following error message:

sid2name S-1-5-21-1482476501-688789844-725345543-512

LookupAccountSid failed, LastError = 1789



CAUSE
This problem occurs because Windows cannot resolve security identifiers (SIDs) to names. An SID is a numeric value that identifies a user or group. For each access control entry (ACE), an SID identifies the user or the group for whom access is permitted, denied, or audited.



Hotfix Information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
No prerequisites are required.

Restart Requirement
You must restart your computer after you apply this hotfix.

Hotfix Replacement Information
This hotfix does not replace any other hotfixes.

File Information
The English version of this hotfix 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 ---  06-Aug-2003  22:42  5.0.2195.6748     124,688  Adsldp.dll 06-Aug-2003 22:42  5.0.2195.6748     132,368  Adsldpc.dll 06-Aug-2003 22:42  5.0.2195.6748      63,760  Adsmsext.dll 06-Aug-2003 22:42  5.0.2195.6800     381,712  Advapi32.dll 06-Aug-2003 22:42  5.0.2195.6753      69,392  Browser.dll 06-Aug-2003 22:42  5.0.2195.6680     134,928  Dnsapi.dll 06-Aug-2003 22:42  5.0.2195.6780      96,528  Dnsrslvr.dll 06-Aug-2003 22:42  5.0.2195.6753      47,376  Eventlog.dll 06-Aug-2003 22:42  5.0.2195.6759     148,240  Kdcsvc.dll 18-Jun-2003 17:43  5.0.2195.6758     205,072  Kerberos.dll 26-Mar-2003 21:37  5.0.2195.6695      71,888  Ksecdd.sys 01-Aug-2003 17:40  5.0.2195.6797     509,712  Lsasrv.dll 01-Aug-2003 17:40  5.0.2195.6797      33,552  Lsass.exe 17-Jul-2003 23:13  5.0.2195.6786     109,840  Msv1_0.dll 06-Aug-2003 22:42  5.0.2195.6601     311,568  Netapi32.dll 06-Aug-2003 22:42  5.0.2195.6791     361,232  Netlogon.dll 06-Aug-2003 22:42  5.0.2195.6800     931,600  Ntdsa.dll 06-Aug-2003 22:42  5.0.2195.6800      51,472  Samlib.dll 06-Aug-2003 22:42  5.0.2195.6742     392,464  Samsrv.dll 06-Aug-2003 22:42  5.0.2195.6737     131,344  Scecli.dll 06-Aug-2003 22:42  5.0.2195.6737     306,448  Scesrv.dll 15-Jul-2003 22:08  5.0.2195.6776   4,858,368  Sp3res.dll 06-Aug-2003 22:42  5.0.2195.6601      51,472  W32time.dll 16-Aug-2002 13:32  5.0.2195.6601      57,104  W32tm.exe 06-Aug-2003 22:42  5.0.2195.6741     126,224  Wldap32.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section of this article.



MORE INFORMATION
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

For additional information about the terminology that is used in this article, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the Standard Terminology That Is Used to Describe Microsoft Product Updates, Tools, and Add-ons

Additional query words: sid name resolution

Keywords: kbhotfixserver kbqfe kbbug kbfix kbqfe kbwin2000presp5fix KB826452

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