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WOW Environment Remains in Memory After Quitting 16-Bit Program

This article was previously published under Q181333
SUMMARY
When you start a 16-bit program on a computer running Windows NT, theNtvdm.exe and Wowexec.exe processes start. After you quit the 16-bitprogram, the Ntvdm.exe and Wowexec.exe processes remain in memory.
MORE INFORMATION
This behavior is a design feature of Windows NT. The Ntvdm.exe andWowexec.exe processes remain in memory in case you start another 16-bitprogram. Leaving the Windows-On-Windows (WOW) environment (which consistsof the Ntvdm.exe and Wowexec.exe processes) in memory improves performance.

The WOW environment is not loaded when you start Windows NT. It is loadedwhen you first start a 16-bit program.
subsystem 16bit
Properties

Article ID: 181333 - Last Review: 02/22/2007 23:44:47 - Revision: 2.2

  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows 2000 Professional Edition
  • Microsoft Windows NT Workstation 4.0 Developer Edition
  • Microsoft Windows NT Server 4.0 Standard Edition
  • Microsoft Windows NT Server 4.0 Enterprise Edition
  • kbinfo KB181333
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