After successfully switching to Pro, take these steps to personalize your new environment.
Always use legitimate software and licenses. Piracy not only violates Microsoft’s terms but also exposes your system to security risks from untrusted activation tools.
When prompted for a product key, enter your Windows 10 Pro key. If you don't have it yet, you can click "I don't have a product key" (you will be asked to activate later). Select Edition: If asked, ensure you select Windows 10 Pro . how to change windows 10 enterprise ltsc to windows 10 pro
Close the Registry Editor. Do not restart your computer yet, as Windows will revert these temporary changes upon reboot. Step 2: Run the In-Place Upgrade Media
If you absolutely cannot perform a clean install, it is possible to trick the system into allowing a "repair upgrade" using a Pro ISO, but this is prone to errors and often results in a broken system. Download the Windows 10 ISO (latest version) . Open Registry Editor ( regedit.exe ). After successfully switching to Pro, take these steps
This is the only guaranteed, stable method. You will lose all installed applications, but you can keep personal files if you choose the right option during installation.
Back up your data, download the Media Creation Tool, and spend an evening refreshing your system. You will end up with a modern, feature-complete version of Windows 10 that continues to receive semi-annual updates until October 14, 2025 (extended support via ESU may be available). And if you are adventurous, consider moving to Windows 11 Pro instead—but that is a topic for another guide. When prompted for a product key, enter your
Windows will check the key. If it accepts it, the system will attempt to upgrade the edition. This may take 10–30 minutes and involve multiple reboots.
Wait for the operating system to update its feature set. Once done, restart your computer.
If you attempt this, you must change the following registry keys to "Professional" and then run an "in-place upgrade" using the Windows 10 Pro ISO: