This article was previously published under Q272576
This article has been archived. It is offered "as is" and will no longer be updated.
When you are logged on to a Windows 2000-based computer that is a member of a Microsoft Windows NT 4.0-based domain as a local user (that is, you are not logged on to the domain) and you try to add a local system group such as the Backup Operators group to a Access Control List (for example, when you try to add permissions to a file that is located on a volume that uses the NTFS file system), you may receive the following error message:
Unable to lookup user names for display.
A logic error in the code results in an incorrectly formatted name being passed to the account lookup routine.
To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
The English version of this fix should have the following file attributes or later:
Date Time Version Size File name -------------------------------------------------- 9/23/2000 4:50PM 5.0.2195.2314 77KB Aclui.dll
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 2.
For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:
249149 Installing Microsoft Windows 2000 and Windows 2000 Hotfixes