Microsoft KB Archive/251045

= Memory in Shared Code Sections Is Not Shared Across Terminal Server Sessions =

Article ID: 251045

Article Last Modified on 3/1/2007

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APPLIES TO


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

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This article was previously published under Q251045



SYMPTOMS
On Microsoft Windows NT 4.0, Terminal Server Edition, memory in shared code sections of system global DLLs is shared across terminal server sessions.

On Windows 2000, however, memory in shared code sections of system global DLLs cannot be shared across terminal server sessions. Instead, each session receives its own instance of the variables that are declared within a shared code section. That memory is shared among processes that are running within the same session, but is not accessible to processes in other sessions.



CAUSE
New architecture of Windows 2000 memory manager prevents shared code sections from being shared across terminal server sessions.



RESOLUTION
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 the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack



WORKAROUND
If an application needs to share memory across terminal server sessions on Windows 2000, it should do so through a global file mapping object.



STATUS
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 1.



MORE INFORMATION
On computers that are running terminal server, you can register a DLL as a system global resource. For additional information on how to perform this registration, click the article number below to view the article in the Microsoft Knowledge Base:

186625 Terminal Server Commands: REGISTER

Keywords: kbhotfixserver kbqfe kbbug kbfix kbkernbase kbqfe kbtermserv kbwin2000sp1fix KB251045

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