NOTE: The second parameter may vary, but always falls within the memory range of Rdr.sys.
NOTE: Another way of identifying this particular problem is that this behavior takes place during the shutdown process while clients are still connected to the Terminal server.
This problem is caused by a null security entry being passed into the redirector.
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 Terminal Server. This problem was first corrected in Windows NT 4.0 Server, Terminal Server Edition, Service Pack 5.