Install NTVDMx64

NTVDMx64 makes it possible to run old DOS applications under 64-bit Windows 7 and Windows 10.

Note: There have been observed and reported issues with Windows 11 installations of NTVDMx64.

1. Download https://mendelson.org/ntvdmx64-ccpu-fre_pw-leecher.7z - defeat security features/warnings in the OS or browser to download/save the file successsfully
2. Extract the contents of ntvdmx64*.7z using 7zip or similar archive program that supports *.7z archive files ¹⁾
3. Run usa/install.bat from the extracted archive - defeat/bypass any security warnings from Windows

Alternatives to use of NTVDMx64 include running your BBS under a 32-bit Windows Virtual Machine (VM) as a guest OS within a Hypervisor (e.g. Microsoft Hyper-V, VMWare, VirtualBox).

• How-to pages
• Why won't DOS programs run on my 64-bit computer running a 64-bit version of Windows?