Hello,
When you upgrade from Windows 11 Home to Pro through the Windows Store, you are purchasing a retail license. This means that the license is not tied to a specific device and can be transferred to another device in the future if needed.
The OEM license is bundled with the hardware, meaning it comes pre-installed on the newly purchased hardware device. This license is usually provided by the original manufacturer of the device and is sold with the hardware. When you buy a computer with a pre-installed operating system from a retailer, that pre-installed operating system is the OEM version.
So, if you want to have an OEM license, you can only buy a new device.
Please note that performing a clean installation will erase all data on your device, so it's important to back up your important files before proceeding.
Best Regards,
Hania Lian
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