Reflecting on 20 years of Home windows Patch Tuesday







This 12 months marks a vital milestone for the historical past of Microsoft, the Home windows product and for better computing: 20 years of Patch Tuesday updates. With greater than 1.4 billion month-to-month energetic Home windows units in service, and billions extra units served alongside the journey of Home windows, our purpose is to maintain customers world wide protected and productive.

In immediately’s safety local weather, our work throughout the corporate and better {industry} to maintain this vital ecosystem safe is extra necessary than ever. And whereas we additionally ship bug fixes and different new options by way of steady innovation, ultimately safety is job one. Month-to-month Patch Tuesday updates function a car for simply that. Created from a 2002 company-wide initiative, Patch Tuesday has develop into a widely known {industry} commonplace, maintaining not simply Home windows however the individuals, corporations and establishments that depend upon it protected and productive for 20 years.

On this article, we’ll share a bit on the historical past of Patch Tuesday and the way it continues to evolve via a principle-based strategy.

Patch Tuesday’s origin and historical past

On January 12, 2002, Invoice Gates printed a company-wide electronic mail saying the creation of the Reliable Computing (TwC) initiative. It represented a paradigm shift, pushing safety groups to shift their pondering towards securing options themselves throughout the breadth of our merchandise. From this necessary initiative, we consolidated our safety replace course of right into a predictable cadence of month-to-month Patch Tuesday updates. Highlights from the 20-year tenure of Patch Tuesdays beneath present the continued evolution of this vital, well-established apply:


  • Patch Tuesday updates start. They introduce supporting patch administration processes, together with Home windows Replace and Microsoft Replace providers.
  • Home windows Vista and later Home windows 7 are launched. Each incorporate enhanced safety features, Consumer Account Management (UAC), Home windows Defender and improved firewall capabilities.


  • New out-of-band (OOB) updates deal with imminent threats just like the Conficker worm vulnerability.
  • Safety Growth Lifecycle enlargement offers a sturdy set of finest practices and tips for creating safe software program.
  • New instruments assist organizations deploy and assess the standing of safety updates. These embrace Home windows Server Replace Providers (WSUS) and the Microsoft Baseline Safety Analyzer (MBSA).
  • Home windows 8 options enhance safety measures. We welcome Safe Boot, Home windows Defender enhancements and additional developments in Consumer Account Management (UAC).


  • Home windows 10 is launched. It represents a basic shift in the direction of a “Home windows as a service” mannequin. It’s accompanied by the inaugural launch of the Home windows replace historical past pages, extra generally often called launch notes.
  • New safety enhancements intention to offer stronger safety in opposition to malware, unauthorized entry and credential theft. Gadget Guard, Credential Guard and Home windows Whats up are developed and launched.
  • Home windows Replace for Enterprise goes reside. It permits organizations extra management over when and easy methods to deploy Home windows updates.
  • The standard and reliability of safety updates proceed to be the main focus of the dialog. “In every new month-to-month high quality replace, we add one other layer of safety, one which tracks rising and altering developments in malware and viruses” (John Cable, September 20, 2017).
  • We take proactive steps to bolster transparency and align with Normal Knowledge Safety Rules (GDPR). Organizations achieve the boldness they should maintain units updated.


  • An industry-wide collaboration begins round proactively patching firmware. It follows a public disclosure of Spectre & Meltdown {hardware} vulnerabilities. Month-to-month high quality updates function a software to increase microcode updates to units.
  • The usage of machine studying optimizes Home windows replace experiences as proactive measures throughout Home windows updates proceed. AI turns into a software to serve Home windows 10 function updates.
  • Rigor and transparency develop: “The dimensions and variety of the Home windows ecosystem requires us to take a data-driven strategy to high quality and to leverage automation for testing, validation and distribution” (Mike Fortin, former CVP, December 10, 2018). The dialogue of high quality validation efforts by way of Patch Tuesday consists of the Pre-release Validation Program (PVP), Depth Check Passes (DTP), Month-to-month Check Passes (MTP), the Home windows Insider Program (WIP) and the Safety Replace Validation Program (SUVP).
  • Home windows launch well being dashboard presents everybody a single pane of glass to view recognized points throughout function and month-to-month high quality updates.
  • In response to 2020’s COVID-19 rising pandemic, distant work-related instruments obtain better focus. We deal with vulnerabilities in Distant Desktop Providers and Microsoft Groups, in addition to lengthen Finish of Assist for sure energetic variations of Home windows.
  • Identified Subject Rollbacks (KIRs) assist units shortly return to a productive state if inadvertently impacted by an replace difficulty.

Although there are extra highlights and lowlights alongside that journey, Microsoft stays dedicated to our mission. Our investments assist each particular person and group world wide to attain extra, whereas staying protected and productive with Home windows.

Our principle-based Patch Tuesday evolution

The notions of safety and productiveness have developed as drastically because the world of know-how. As Brad Smith lately shared in his Nov. 2 weblog submit A brand new world of safety: Microsoft’s Safe Future Initiative, these efforts are solely intensifying. This implies nice challenges and alternatives for Microsoft’s imaginative and prescient to align on empowering everybody to attain extra via its merchandise, together with Home windows.

Home windows is a vital software and extra necessary than ever to how people work and play. We are going to proceed to give attention to evolving the replace expertise. Particularly, we’ve raised the standard of studying, adapting and serving our more and more various buyer base world wide, adhering to 4 ideas for the month-to-month Home windows servicing course of:

  • Predictability: The Home windows month-to-month launch cadence ought to align predictably to the second Tuesday of each month.
  • Simplicity: Everybody ought to have the ability to handle to a easy, common and constant patching expertise. Doesn’t matter when you’re a person Home windows person or an IT supervisor overseeing your group. You shouldn’t must cease what you’re doing to scrupulously take a look at an replace earlier than deploying it.
  • Agility: In immediately’s computing panorama, safety threats demand fast responses. We should present all Home windows customers with updates shortly with out compromising high quality or compatibility.
  • Transparency: To simplify the replace course of for people and for companies massive and small, everybody ought to have entry to as a lot data as they want. You need to have the ability to perceive updates upfront. This consists of complete but clear launch notes, guides for frequent servicing instruments, entry to help and a suggestions system.

Releasing month-to-month Home windows updates of the very best high quality stays vital. Our dedication to bettering and evolving Home windows patch high quality informs efforts and dedication in the direction of fast detection of points, speedy mitigations, clear and prescriptive communications, and continued studying and enhancements. With new hotpatching applied sciences proving themselves throughout Azure Fleet and Home windows Server Azure Version, the longer term for patching is shiny as we proceed to pursue quick, dependable, safe updates for the absolute best replace expertise. We’re additionally investing in new AI know-how and expertise, in addition to in management and cross-team partnerships, to make sure that we will maintain you protected and productive for the following 20 years of Home windows.


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