Microsoft has released the ms dos 4 0 source code – Breaking News & Latest Updates 2026
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Umar Shakir
Microsoft has released the MS-DOS 4.0 source code.

The company worked with IBM to release a 1998 uncompiled version DOS 4.0 on Thursday, although unfortunately, this release lacks the app-switching capabilities that landed it the nickname MT-DOS. Multitasking was scrapped in later versions to make way for GUI operating systems like Windows.

Microsoft already released MS-DOS 1.25 and 2.0 in 2014, in cooperation with The Computer History Museum.

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