Classic 7 is Windows 10 LTSC cosplaying as Windows 7

Classic 7 is a heavily modified Windows 10 IoT LTSC build designed to resemble Windows 7 from 2009. It uses extensive skins, themes, add-ons, and system tweaks, including components adapted from older Windows versions. The customization goes beyond appearance, incorporating real binaries from earlier Windows releases grafted onto Windows 10. One included element is Windows Media Center from Windows XP, which was removed from Windows 10 before release. The base platform is Windows 10 IoT LTSC, a long-supported edition with updates extending to 2032. The underlying Windows edition requires legitimate volume licensing, and using Classic 7 without appropriate licensing may result in an unlicensed Windows copy, making it unsuitable for production use.

"Classic 7 is a heavily modified version of Windows 10 IoT LTSC, reworked to make it look as much as possible like Windows 7, while still being in support and receiving updates. This has been accomplished thanks to a large compilation of skins, themes, add-ons, tweaks, and so on - some of which are real components from older versions of Windows, adapted and modified to run on Windows 10."

"This isn't just a layer of makeup; it's more like a face transplant. It includes some real binaries from Windows 7, and indeed earlier versions, adapted and grafted onto Windows 10. One component is the Windows Media Center from Windows XP, which was cut from Windows 10 before release."

"The specific version of Windows 10 that it's modified is significant. It's Windows 10 IoT LTSC. We talked about this specific edition in April 2025 because it's the last version of Windows 10 that is still in support and receiving updates. The standard Windows 10 Enterprise LTSC release will continue to receive updates until 2027, and the IoT edition, which is only available in US English, will get updates until 2032 - so this is the longest-lived version of Windows 10."

"Classic 7 is one; it's a modified version of an Enterprise edition of Windows, one that's only available for legitimate licensing via a Volume License Agreement. Unless you have appropriate volume licensing for the underlying Windows edition and have paid the fairly hefty fee, this is an unlicensed copy of Windows. So we have to spell out that this is not for production use."

Read at theregister