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Windows XP source code leaked online

Windows XP source code leaked online

  • The Verge has confirmed that the material is legal, and a Microsoft spokesperson said that the company is “investigating this matter.”
  • Windows Server 2003 source is also included.

Microsoft’s source code for Windows XP and Windows Server 2003 has been leaked online. The seed files of the source codes of these two operating systems have been released on various file-sharing sites this week.

This is the first public leak of the source code of Windows XP, although the leaked document claims that this code has been secretly shared for many years.

The latest source code leak is unlikely to pose any major threat to companies still running Windows XP machines.

Microsoft terminated support for Windows XP in 2014, although the company responded to a large-scale WannaCry malware attack in 2017 with a very unusual Windows XP patch.


Although this is the first time the Windows XP source code has appeared publicly, Microsoft does run a special government security program (GSP) that allows governments and organizations to have controlled access to the source code and other technical content.

The latest XP leak is not the first time Microsoft’s operating system source code has appeared online.

A few years ago, at least 1GB of Windows 10 related source code was leaked, and this year Microsoft even faced a series of Xbox-related source code leaks.

The original Xbox and Windows NT 3.5 source code appeared online in May, only a few weeks after the Xbox Series X graphics source code was stolen and leaked online.

It is not clear how much Windows XP source code is included in this leak, but an internal Windows expert has found Microsoft’s NetMeeting user certificate root signing key.

Part of the leaked source code also cited Microsoft’s Windows CE operating system, MS-DOS, and other leaked Microsoft materials. Curiously, these files also contain references to Bill Gates’ conspiracy theory, which is spreading misinformation.

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