I do not agree with most of the answers below. It has been my experience the current version of Windows 10 (Version 2004, OS Build 19041.450) is by far the most stable Windows operating system when you consider the the fairly wide variety of tasks required by both home and business users, which comprise more than 80%, and probably closer to 98% of all users of various versions of Microsoft Windows.
Examining the question from the perspective of an IT specialist keeping business servers up and running is a rather myopic and off-topic response to the simple, straightforward question as it’s posed.
I’ve worked in IT on and off since 1986, including home, business user, and back-end servers up through Windows Server 2008 R2 (ver 6.1). I’ve dabbled in 6.3’s Windows Server 2012 R2. I’ve written 25 full-length articles featured on the covers of several leading IT magazines published by both IDG and Ziff-Davis.
The question doesn’t ask about Windows Server. It’s asks about Microsoft Windows. As such, the only valid metric for that has to do with productivity and uptime.
I’m on my computer at least 10 hours a day, and use Windows 10 for everything, including running Microsoft Office and Libre Office, performing statistical analysis via Excel, R and Python, to managing some rather large and complicated databases via SQL Server, SSMS, Squirrel SQL, and others.
I have not experienced a single hiccup under Windows 10 since the Anniversary Update (Redstone 1) came out in 2016. While I usually shutdown every night, on several occasions while conducting rather long and involved analyses, I’ve hibernated for up to three weeks straight. Zero issues.
My greatest beef with the OS are Microsoft’s forced updates. If I’m in the middle of a project and cannot shut down for a couple of weeks, their forced updates are a ROYAL pain in my backside. I’m a good IT guy and will update as soon as it’s practical, which usually means right away if I’m just surfing the ‘net. That decision, however, should be mine and mine along, not Microsoft’s.
Other than that, it’s an absolute winner, and VASTLY exceeds both the stability and functionality of NT 3.1, 3.51, 4.0, 2000, XP, Vista, 7, 8, and 8.1.
Please note I didn’t include Server 2003, Server 2008/R2, Server 2011, Server 2012/R2, Server 2016 or Server 2019.
The question clearly had nothing to do with the servers. It was geared solely to home and business users i.e. desktops and laptops. In this realm, Windows 10 eclipses all others in terms of stability while being used to host a wide variety of programs, and I have a lot: 231 apps listed under Add and Remove Programs.