MSDN (Microsoft Developer Network)

» see msdn.microsoft.com as it lived, on the wayback machine

~ the last words ~

It started as mail. In September 1992 Microsoft began selling a subscription called the Microsoft Developer Network, and what arrived was a quarterly CD-ROM of technical articles and sample code, with a sixteen-page tabloid newspaper in the box called Microsoft Developer Network News. The September disc was a pre-release labeled P1 and a second followed in January 1993. The first thing Microsoft counted as a real release was Disc 3, in April. Documentation was a physical object you waited for.

MSDN Online launched in 1998 with more than 250,000 pages on it. The machinery behind that is worth writing down because it survived almost to the end: authors wrote in Microsoft Word, a conversion step turned the files into HTML, and a tool named pubwiz, short for Publishing Wizard, pushed them live. That pipeline ran for over twenty years and produced something like 45 million pages of technical content, which is a number that only makes sense if you remember Microsoft was documenting every API of every product across every version simultaneously.

What MSDN actually was, for anyone who wrote software for Windows, was the terminus. You had a function name and no idea what it wanted, you searched, and you landed on a msdn.microsoft.com library URL with a version stamp bolted into the parentheses and an .aspx on the end. The page was rarely warm and almost never had an example you could use unmodified, but it was complete, and complete beat friendly. For a long stretch there was nothing else. Stack Overflow did not exist until 2008, and even after it did, the accepted answer usually linked back here.

I am a computer engineer who learned this stack in the 2000s, so MSDN was simply part of the furniture. Not a site you visited, a site you arrived at, four or five times a day, from a search you had already given up on solving from memory. Nobody I knew had affection for it. Everybody used it.

~ the record ~

~ the discs ~

The other half of MSDN was licensing. An MSDN Subscription was how a professional developer got legal copies of the operating systems and tools they needed to build against, delivered as a stack of discs and later as downloads, with keys attached. Its administrator-side twin was the TechNet Subscription, which did the same job for people who ran servers rather than wrote code, and which Microsoft killed in 2013. MSDN Subscriptions outlived the brand that named them by being quietly rebranded Visual Studio Subscriptions, which is what they are still sold as today.

That split is why the death is easy to miss. The paid product did not stop existing, it changed names. What ended was the library and the identity that went with it.

~ forty five million pages ~

The replacement was designed in November 2015, in an internal document four people on what became the docs.microsoft.com team wrote and named "A New Hope". The principles in it were not really about documentation. They were about infrastructure: one site instead of dozens, Markdown for prose and YAML for generated API reference, GitHub underneath so that anyone could file a correction, and Azure hosting instead of the old estate. Microsoft later put the savings from that last item at over $7 million.

Migration of the MSDN and TechNet libraries began in late 2017 and finished in 2019. The accounting Microsoft published in November that year: 45.4 million topics in scope, 23.0 million sent to a previous-versions archive, 21.0 million carried onto the live site, and 2,454 new repositories created just to hold the archived half. Redirects were put in place for millions of pages, which is the part they got right. Two decades of links from forums and blogs and Stack Overflow answers still resolve.

~ what the redirect kept ~

The pieces went one at a time. MSDN Blogs went read-only in July 2019. The last issue of MSDN Magazine was published on 1 November 2019, ending a run that began in March 2000 when Microsoft Systems Journal merged with Microsoft Internet Developer; the farewell had run in the August issue, and paying subscribers were sent pro-rated refund checks. Worth noting that the magazine was never really Microsoft's own: it was produced by a publisher called 1105 Media, whose address is the one the refund notice told readers to write to. MSDN Code Gallery was redirected into a samples browser with its notable contents dropped into a GitHub organization called MicrosoftArchive, a name that says everything about the mood of the exercise.

The forums took longest. Microsoft Q&A went to preview at the end of October 2019 and the November post promised the migration would finish by mid-2020. Every English MSDN and TechNet forum was finally set read-only on 13 January 2021, about six months behind, with the non-English ones still open and waiting on a translation plan.

One line in that November 2019 post has aged into something else. Under Channel 9 it says the video site "continues to be an important investment" and promises a migration path. Channel 9 was gone before the end of 2021.

~ what answers today ~

The old address returns a 301 to learn.microsoft.com and nothing else. There is no farewell page and no archived homepage sitting at it, because the whole point of the operation was that no URL should ever dead-end. The thing that replaced it, docs.microsoft.com, was itself absorbed into Microsoft Learn in 2022, so the successor is already on its second name while the redirect from the original still works. Twenty-three million of the pages behind it were filed under previous-versions, across 2,454 repositories that exist to hold documentation for products nobody is expected to run again.

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