Where can I find Windows 8 product key after reinstall?

If the previous suggestion still does not work, then it is recommended to use a product key finder instead. 

Product key finder software is a tool designed to retrieve software license keys or activation codes stored on a device. These tools scan the system's registry or specific files to locate and display the product keys for operating systems, productivity software, or other installed programs. They are particularly useful when users lose access to their original documentation or emails containing the license information.

This type of software is especially helpful during system upgrades, reinstalls, or migrations, where reactivation of software is required. For example, if you’re reinstalling Windows or Microsoft Office, a product key finder can save time and hassle by quickly retrieving the necessary key without the need to contact support or search through old records.

Additionally, Windows 8 product key finder tools are useful for businesses or individuals managing multiple licenses. By consolidating and displaying all keys in one place, these tools simplify software management, ensuring compliance and reducing the risk of losing access to purchased software.