We know that Windows 10 is being rolled out in phases, with those on the Windows Insider program getting first dibs. But only 24 hours after the OS was released Microsoft has said that it is “humbled” by consumer demand so far. In a blog post head of marketing at Windows, Yusuf Mehdi , said, “We now have more than 14 million devices running Windows 10. We still have many more upgrades to go before we catch up to each of you that reserved your upgrade.”

Most of the feedback so far has been very positive, with a particular glowing review coming from Wired. “A huge improvement on whatever version you’re using,” said Wired, emphasizing the operating system’s usability and simplicity. Similarly compelling reviews were widespread among tech media, with CNET calling Windows 10, “The Goldilocks version of Microsoft’s venerable PC operating system – a ‘just right’ compromise between the familiar dependability of Windows 7, and the forward-looking touchscreen vision of Windows 8.”

But it’s not all been rose petals thrown at Microsoft’s stage. Reviewers have aired concern over forced updates in the new OS, while a particularly forthright complaint came from Mozilla Corp.’s CEO Chris Beard. Beard was not impressed with Microsoft making its new Edge browser the default for Windows 10. In an open letter to Microsoft Beard used some strong language, stating that Microsoft’s actions concerning the browser are “disturbing”. He went on to say, “We strongly urge you to reconsider your business tactic here and again respect people’s right to choice and control of their online experience by making it easier, more obvious and intuitive for people to maintain the choices they have already made through the upgrade experience.”

But this is a small glitch in what otherwise has been a good week for Microsoft in terms of feedback. Redmond right now is basking in superlatives, and the words “best ever” have soon become commonplace.

If you haven’t already taken steps to upgrade you can download the Windows 10 app, if you’re running Windows 8.1 and Windows 7 SP1. If you’re still unsure about how to upgrade you can also find support here.

Photo credit: Bhupinder Nayyar via Flickr