Microsoft KB Archive/185211

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Article ID: Q185211

The information in this article applies to:
 * Microsoft Windows NT Server version 4.0

SYMPTOMS
When you run a service or an application that uses the COM ports or Serial.sys, Windows NT Server may stop responding (hang) and the following system event appears in the Event Viewer:

Event ID: 2019 Description: The server was unable to allocate from the system nonpaged pool because the pool was empty.

CAUSE
The computer running Windows NT Server is running out of nonpaged pool memory. This happens because Serial.sys is allocating memory that is never released. This problem can happen when you share IRQs with COM port devices.

STATUS
Microsoft has confirmed this to be a problem in Windows NT version 4.0. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

Additional query words: serial hung leak

Keywords         : kbbug4.00 NTSrv Version          : WinNT:4.0 Platform         : winnt Hardware         : x86 Issue type       : kbbug Solution Type    : kbpending
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