Policy

Add "Run in Separate Memory Space" check box to Run dialog box

Windows 11 25H2

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Policy overview

Key metadata and intent for this policy.

ClassUser
CategoryStart Menu and Taskbar
Supported onAt least Windows 2000

Supported OS tags: Windows10, Windows10RT, Windows11, Windows2000, Windows7, Windows8, Windows81, WindowsRT, WindowsRT81, WindowsServer2003, WindowsServer2008, WindowsServer2012, WindowsServer2012R2, WindowsServer2016, WindowsVista, WindowsXP

Lets users run a 16-bit program in a dedicated (not shared) Virtual DOS Machine (VDM) process. All DOS and 16-bit programs run on Windows 2000 Professional and Windows XP Professional in the Windows Virtual DOS Machine program. VDM simulates a 16-bit environment, complete with the DLLs required by 16-bit programs. By default, all 16-bit programs run as threads in a single, shared VDM process. As such, they share the memory space allocated to the VDM process and cannot run simultaneously. Enabling this setting adds a check box to the Run dialog box, giving users the option of running a 16-bit program in its own dedicated NTVDM process. The additional check box is enabled only when a user enters a 16-bit program in the Run dialog box.

Internal name
MemCheckBoxInRunDlg
Policy ID
2d47243288c0
Elements
0

Registry values

How enabled and disabled states update the registry.

Registry locationTypeEnabled valueDisabled value
HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\MemCheckBoxInRunDlgREG_DWORD
1
0

Policy elements

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This policy has no additional user input fields.

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