Windows 8.1 versions and features
There are two types of licenses to activate Windows 10. On the one hand you have the retail license (or RTL), which is the one you buy in physical stores or directly at the Microsoft store. With these RTL licenses you can install Windows on more than one computer, as long as you do not try to use your license key on more than one computer simultaneously.
The RTL licenses of the Home version of Windows 10 can be purchased on this page of the Microsoft Store for a price of 135 euros. If you prefer the PRO version, which incorporates for example enterprise features for encryption, remote login, or the creation of virtual machines, you can buy them on this other Microsoft Store page for 279 euros.
Here you should keep one important thing in mind. If you bought a cheap OEM license from an online store you will not be able to upgrade for free anymore, you will only be able to do so in case you have an expensive original license. However, this possibility may also disappear over time, but it’s all a matter of trial and error.
Upgrading windows 8.1 single language
Most of the criticism fell on the limitations on the user to control some operations. In this case, Windows Update installs updates automatically. An erroneous update, with the code KB3081424 released in August 2015, was reported to cause an error in the registry, this could have been easily prevented by the user, but since that feature was not available, it caused annoyance among affected users. From the RTM released in 2015 until version 1809 of October 2018, only users of the Pro and Enterprise editions could pause the installation of this and other updates; however, in version 1903 of May 2019 the option to pause them came to users of the Home edition. Privacy concerns were also raised by critics and advocates that the default settings allow user information to be sent to Microsoft and its partners.
Windows 10 displays advertising in various applications such as the file explorer and lock screen, which many people find unacceptable. This does not apply in certain countries, as there is no advertising in the file explorer or lock screen, however, Microsoft Edge promotes Microsoft services and itself.
Windows 8 Support
Windows 8 is a version of Microsoft Windows, a line of operating systems developed by Microsoft for use on personal computers, including home and business desktops, laptops, netbooks, tablets, servers and media centers.
unveiled the Windows 8 interface as well as new features at Computex 2011 in Taipei (Taiwan) by Mike Angiulo and at the D9 conference in California (United States) by Julie Larson-Green and Microsoft Windows president Steven Sinofsky. On February 16, 2012, Microsoft unveiled the Windows 8 interface and new features at Computex 2011 in Taipei (Taiwan) by Mike Angiulo and at the D9 conference in California (United States) by Julie Larson-Green and Microsoft Windows president Steven Sinofsky.
On February 16, 2012, Microsoft decided to postpone the expiration date of the Developer Preview. Originally set to expire on March 11, 2012, it would now expire on January 15, 2013. On February 29, 2012, Microsoft decided to postpone the expiration of the Developer Preview.
On February 29, 2012, Microsoft released the Windows 8 Consumer Preview, the beta version of Windows 8, build 8250. For the first time since Windows 95, the Start button is no longer present on the taskbar, although the Start screen still opens when clicking in the lower left corner of the screen and clicking Start in the so-called Charm bar.  Windows president Steven Sinofsky said that more than 100,000 changes had been made since the release of the Developer Preview. The day after its release, the Consumer Preview had been downloaded more than 1 million times. Like the Developer Preview, the Consumer Preview expired on January 15, 2013.
Windows 8.1 discontinued
The final version of Windows 10 21H2, the “Windows 10 November 2021 Update” as Microsoft calls it, is now available and like previous releases is free to upgrade PCs with a valid Windows 10 license. Consumer Home and Pro editions will have 18 months of service and support, while Enterprise and Education editions will have 30 months of support starting yesterday, November 16.
In contrast to the (controversial) increase in official requirements that Microsoft has imposed in Windows 11, the hardware requirements of Windows 10 21H2 have not changed and are the same as those known from previous versions. In addition, all compatible drivers from the spring release (21H1) will be digitally signed for 21H2 using the same properties.
As you can see, the minimum requirements are absolute minimums. Although Windows 10 runs quite well on computers with low level of hardware and with those minimums you will be able to install the system, another thing is the daily use of the system and applications. You will need to have a higher level if you want a decent user experience.