Windows 10 is an entirely fresh version of Microsoft's veteran Windows operating system (OS) – a version that is make-or-break for the company.
It was released on July 29, 2015 in seven versions, which I'll tell you much more about below, as well as giving you techradar's final verdict on all aspects of the new OS. Note that we've published a distinct Windows 10 Mobile review, which we've recently given a full upgrade.
Even though Windows 8.1 did improve a lot, there's no escaping that, with Windows 8, Microsoft was hugely complacent, riding on the coattails of Windows 7. It drastically misread its audience with a fundamentally different interface that didn't make any reasonable sense and was hard to learn. It failed us. It failed itself.
Thankfully, 2016 Microsoft is starkly different from 2012 Microsoft. The key management of the company has shuffled. It has realized that people can choose other OSes. It's been creating software for Mac OS X, Linux, iOS and Android. As you'll see, it's allowing apps from other systems to be easily ported to Windows, too.
Almost 10 months after release, Microsoft has continued to deliver on its promise of Windows as a Service, announcing its first Redstone (as it's reportedly known internally) update at its largely positive Build 2016 in the form of the Windows 10 Anniversary Update. However, more recently, as Windows 10 growth has begun to stall heading into the expiration of its free upgrade offer, Microsoft has begun to enact strong measures to entice new fans.
On the other hand, those uncertain about their commitment to Windows 10 won't find solace in the recently released Anniversary Update's 10-day rollback limit or its numerous freezing complaints. Improved browser security, though, is a major plus.
But, with an existing user base exceeding 350 million, accompanied by over 135 billion hours of use, Windows 10's success is nothing to scoff at. In fact, that number may grow even larger upon the operating system's next set of major overhauls in 2017.
Now, with the barrier of entry for Windows 10 raised from $0 to a base of $119, its future is murkier than ever, but its following remains intact.
Windows is more than just an OS
Microsoft believes the future of Windows is as a platform for all. Like Android, the strength of Windows is in the thousands of companies that develop for it (see the section about Universal apps for more on the relationship with developers) and use it in their products.
That's why Windows 10 is no longer just an operating system for 32 and 64-bit PCs. It will also run on the ARM platform for smaller tablets and smartphones. Windows 10 is going to run on phones – it's the new version of Windows Phone, but it's not that clear whether Microsoft will brand new Windows Phones as 'Windows 10' or not. If you know what Windows RT was, then don't worry, because it's nothing like that.
Universal apps will run not only on PCs, but on Windows 10 phones, Windows 10 for IoT devices and Xbox as well.
Like Windows XP, Vista, 7 and 8 before it, Windows 10 is part of the Windows NT family.
From the Windows 10 Preview to RTM
We are part of the Windows Insider program, which gives people early access to Windows 10 updates through various phases of its development, even after release. The majority of this critique is based on build 10240, made available on July 15. It is the RTM – or Release to Manufacturing – version. RTM will also be on Windows 10 PCs you buy in-store or online.
RTM doesn't have the usual 'Windows 10 Insider Preview' text on the desktop, and it has also been released to everybody in the Windows Insider program – even those who didn't want the latest updates (the "slow" ring as opposed to the "fast" ring).
Even now Windows 10 is released, the Windows Insider program will continue, and Microsoft will release Windows 10 updates to members of the program first.
While it's natural that Windows 10 is considered as "finished" by reviewers (us) and consumers, Microsoft doesn't subscribe to this point of view, and says it will carry on developing the OS with additional tweaks.
Joe Osborne and Gabe Carey have also contributed to this review