Win32 LookupAccountSid() Function May Not Work in Certain Conditions

This article was previously published under Q268581
This article has been archived. It is offered "as is" and will no longer be updated.
When the Win32 LookupAccountSid function is called by multiple users, it may not work. This occurs when multiple users makes an RPC call to the server. For each RPC call coming from the client, the server impersonates the client user and calls LookupAccountSid. Calling GetLastError returns ERROR_INVALID_HANDLE.
If many users make RPC calls to the server and a condition arises in which the close for the last connection comes before the bind for next connection, the server returns BindNak to the client and the call does not succeed.
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   ------------------------------------------------------   08/03/2000  03:38p  5.0.2195.2103  426,256  Rpcrt4.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.
This hotfix has a dependency on the Service Pack 1 (SP1) version of NTLM; you must install SP1 before installing this hotfix.

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

Article ID: 268581 - Last Review: 10/20/2013 23:32:15 - Revision: 3.3

Microsoft Windows 2000 Service Pack 1, Microsoft Windows 2000 Advanced Server, Microsoft Windows 2000 Service Pack 1

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