See the Windows lifecycle fact sheet for availability and service information. Work with your account representative if your current version of Windows is out of support. Windows 10 version upgrade: You can directly upgrade any General Availability Channel version of Windows 10 to a newer, supported General Availability Channel version of Windows 10, even if it involves skipping versions. However, applications and settings aren't maintained when the Windows edition is downgraded.
Edition downgrade is also supported for some paths. These methods require that you input a license or product key for the new Windows edition prior to starting the upgrade process. Methods and supported paths are described on this page to change the edition of Windows. If you're also migrating to a different edition of Windows, see Windows 10 edition upgrade. Migrating from one edition of Windows 10 to a different edition of the same release is also supported. This includes upgrading from one release of Windows 10 to later release of Windows 10. You can upgrade to Windows 10 from Windows 7 or a later operating system. If you bought Windows 7 or Windows 8.1 directly for installation on a DIY PC, the box that Windows came in should include a card or label with your product key on it.This article provides a summary of available upgrade paths to Windows 10. Alternatively, laptops and prebuilt PCs should have a “certificate of authenticity” sticker on them (or included in the original packaging) that show your original product key information. Hopefully you jotted your original product key down somewhere before upgrading to Windows 10. Your Windows 10 product key won’t do the trick. You’ll also need a valid product key to activate Windows 7 or Windows 8.1 after installing it. If you purchased a laptop or prebuilt desktop, it may have come with a restore disc in the box. Make sure the version you download is an exact match for the version your product key is approved for-a Windows 7 Home license won’t activate on Windows 7 Professional, for instance. Simply head to Microsoft’s Windows software download page, where you’re able to creation installation media for Windows 7, Windows 8.1, or Windows 10.
Snagging the operating system itself is easy. You’ll need two things to clean-install Windows 7 or Windows 8.1: the appropriate installation media for the version of Windows you’re trying to return to, and a valid product key for that version of Windows.
Prebuilt PCs and laptops should include a sticker that includes your Windows 7 or Windows 8 product key.
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