Is it permissible to use a non-genuine version of Windows on a used device, knowing that the device was originally sold with a genuine version from the manufacturer, which has since ceased its support and sale, and that this non-genuine version carries the same features and price as the genuine version?
It was mentioned in fatwas no. 150015 and 145521 that there is no harm in using non-original copies of a certain edition if the company has stopped selling, producing, and has abandoned it.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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