Can be tired of new and old: detailed Microsoft Win8/Win7 downgrade rights

        Speaking of the downgrade rights of Microsoft Windows, many readers are not very familiar with it. After the official launch of Windows 8, everyone bought a computer with a pre-installed Win8 operating system? Let's take a look at Microsoft's official description of "downgrade rights":
Downgrade rights are end user rights, which are listed in the software license terms accepted by customers when they first run Windows software. Please note that end user downgrade rights will be valid for the sales lifecycle of Windows and Windows Server operating systems, ie, within two years from the date the new version is released.
Windows 8 OEM Versions with Downgrades
Windows 8 Professional includes the right to downgrade to:
• Windows 7 Professional, Windows Vista Business.

Windows 7 OEM Versions Compliant with Downgrade Conditions
Windows 7 Professional and Windows 7 Ultimate include the right to downgrade to:
• Windows Vista Business Edition and Windows Vista Ultimate.
• Windows XP Professional, Windows XP Tablet PC Edition, or Windows XP x64 Edition.
Note Other OEM Windows 7 versions (for example, Windows 7 Home Basic and Windows 7 Home Premium) do not include downgrade rights.

Degradation Process
You can downgrade to a previous version of Windows or Windows Server server software by following these steps:
1. Get the genuine Windows Media and the corresponding product version of the Windows version that meets the downgrade conditions. key.
• The media should come from a previously legally licensed version provided by the OEM or retail channel.
• End users who are licensed separately through Microsoft Volume Licensing can provide their VL media and keys to the system builder to downgrade their systems.
2. Insert a qualifying Windows downgrade version of the media into your CD drive and follow the installation instructions.
3. Type the product key.
• If the software was previously activated, you will not be able to activate it online. In this case, the corresponding local activation support phone number will be displayed. Please dial the number and explain the situation. After determining that the end user has a qualifying Windows license, the customer service representative will provide a single-use activation code to activate the software. Please note that Microsoft does not provide a full product key in this case.