This article was previously published under Q237873
This article has been archived. It is offered "as is" and will no longer be updated.
During authentication, if the account is locked out and the Internet Information Server (IIS) computer is logging to an ODBC database, the following error message occurs:
Overlapped I/O error
This error message is incorrect. Users should receive an error message stating that their user accounts have been locked out.
The authentication error that the account has been locked out is being reset by a pending I/O error returned from an asynchronous write to the IIS log. This causes the incorrect error message to occur.
Windows NT Server or Workstation 4.0
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update. For information on obtaining the latest service pack, please go to:
152734how to obtain the latest windows nt 4.0 service pack
For information on obtaining the individual software update, contact Microsoft Product Support Services. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:
To resolve this problem, obtain the latest service pack for Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
152734 How to Obtain the Latest Windows NT 4.0 Service Pack
Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition.
This problem was first corrected in Windows NT Server 4.0 Service Pack 6 and Windows NT Server 4.0, Terminal Server Edition Service Pack 6.