Editing Windows Server 2003 (section)

== Source code leak ==
On September 23, 2020, the [[Windows XP Service Pack 1]] and Windows Server 2003 source code was leaked onto the [[imageboard]] [[4chan]] by an unknown user. Anonymous users managed to compile the Windows Server 2003 source code, as well as a Twitter user who posted videos of the process on YouTube proving that the code was genuine,<ref>{{Cite web|last=Cimpanu|first=Catalin|title=Windows XP leak confirmed after user compiles the leaked code into a working OS|url=https://www.zdnet.com/article/windows-xp-leak-confirmed-after-user-compiles-the-leaked-code-into-a-working-os/|access-date=2020-10-01|website=ZDNet|language=en}}</ref> but [[YouTube copyright strike|was removed from the platform]] on copyright grounds by Microsoft. The leak was incomplete as it was missing the [[Winlogon]] source code and some other components.<ref>{{Cite web|last=Warren|first=Tom|date=2020-09-25|title=Windows XP source code leaks online|url=https://www.theverge.com/2020/9/25/21455655/microsoft-windows-xp-source-code-leak|access-date=2020-10-01|website=The Verge|language=en}}</ref><ref>{{Cite web|last=September 2020|first=Paul Alcorn 30|title=Windows XP Source Code Leaked, Posted to 4chan (Update, It Works)|url=https://www.tomshardware.com/news/working-windows-xp-source-code-posted-to-4chan-update|access-date=2020-10-01|website=Tom's Hardware|date=30 September 2020 |language=en}}</ref> The original leak itself was spread using [[Magnet URI scheme|magnet link]]s and torrent files whose payload originally included Server 2003 and XP source code and which was later updated by additional files among which were previous leaks of Microsoft products, its patents, media about [[conspiracy theories]] about [[Bill Gates]] by [[anti-vaccination movement]]s and an assortment of PDF files on different topics.<ref>{{Cite web|title=Windows XP Source Code Leaked By Apparent Bill Gates Conspiracist|url=https://gizmodo.com/windows-xp-source-code-leaked-by-apparent-bill-gates-co-1845181128|access-date=2020-10-01|website=Gizmodo|date=25 September 2020 |language=en-us}}</ref>

Microsoft issued a statement stating that it was investigating the leaks.<ref>{{Cite web|last=September 2020|first=Paul Alcorn 30|title=Windows XP Source Code Leaked, Posted to 4chan (Update, It Works)|url=https://www.tomshardware.com/news/working-windows-xp-source-code-posted-to-4chan-update|access-date=2021-03-26|website=Tom's Hardware|date=30 September 2020 |language=en}}</ref><ref>{{Cite web|date=2020-09-25|title=The Windows XP and Windows Server 2003 source code leaks online|url=https://grahamcluley.com/download-windows-xp-source-code-leaks/|access-date=2021-03-26|website=Graham Cluley|language=en-GB}}</ref><ref>{{Cite web|date=2020-09-28|title=Windows XP source code leaked online|url=https://www.computing.co.uk/news/4020805/windows-xp-source-code-leaked|access-date=2021-03-26|website=www.computing.co.uk|language=en}}</ref>

On April 2, 2025, a user managed to build <code>[[ntoskrnl.exe]]</code> using [[Clang]] and [[LLVM|LLD]] for the first time, rather than Microsoft's [[Microsoft Visual C++|MSVC]] compiler.<ref>{{Cite web |date=2025-04-02 |title=Release first ever build of real nt source code with clang · MobSlicer152/ntkrnl |url=https://github.com/MobSlicer152/ntkrnl/releases/tag/clang1 |access-date=2025-04-02 |website=www.github.com/MobSlicer152/ntkrnl |language=en}}</ref>