W

Windows on Windows

Subsystem for 32-bit Windows for running 16-bit Windows programs

In computing, Windows on Windows (commonly referred to as WOW) is a discontinued compatibility layer of 32-bit versions of the Windows NT family of operating systems. Since 1993, with the release of Windows NT 3.1, WoW extends NTVDM to provide limited support for running legacy 16-bit programs written for Windows 3.x or earlier.

Nº Q1065603 ★★

Uncommon · Knowledge

Windows on Windows

Subsystem for 32-bit Windows for running 16-bit Windows programs

In computing, Windows on Windows (commonly referred to as WOW) is a discontinued compatibility layer of 32-bit versions of the Windows NT family of operating systems. Since 1993, with the release of Windows NT 3.1, WoW extends NTVDM to provide limited support for running legacy 16-bit programs written for Windows 3.x or earlier.

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From Wikipedia

In computing, Windows on Windows (commonly referred to as WOW) is a discontinued compatibility layer of 32-bit versions of the Windows NT family of operating systems. Since 1993, with the release of Windows NT 3.1, WoW extends NTVDM to provide limited support for running legacy 16-bit programs written for Windows 3.x or earlier. There is a similar subsystem, known as WoW64, on 64-bit Windows versions that runs 32-bit programs. This subsystem was retired with the end of support of Windows 10 in October 14, 2025. The last version of Windows to include this subsystem is Windows 10, as Windows 11 (and Windows Server 2008 R2 and later) only run the x86-64 processor in long mode and therefore cannot run 16-bit software without emulation software.

Text: Wikipédia, CC BY-SA 4.0. ·

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