Upgrading Windows 10/11 Home to Windows 10/11 Pro Upgrading from Windows Home to Pro can be done during the Out of Box Experience (OOBE) or after setup. Below are the different methods for upgrading: Option 1: During OOBE (Out of Box Experience) Press the FN KEY Once. ( This will ensure that the F1 - F12 Keys are active) Press Ctrl + Shift + F10 to open Command Prompt. If Command Prompt does not show up, press Win + R to open the Run dialog, type cmd , and press Enter to manually open Command Prompt. Enter the upgrade key using the following command in the Command Prompt: Changepk.exe /ProductKey XXXXX-XXXXX-XXXXX-XXXXX-XXXXX Replace XXXXX-XXXXX-XXXXX-XXXXX-XXXXX with your actual upgrade key.     Option 2: Ctrl + Shift + F3 Method Press the FN KEY Once. ( This will ensure that the F1 - F12 Keys are active) Press  Ctrl + Shift + F3 to boot into audit mode. This will skip the OOBE and allow you to perform administrative tasks before the user account is created. Open Activation Settings and click Change Product Key . Enter the upgrade key to initiate the upgrade. After updating, you may encounter a situation where you are locked out of your account. In this case: Restart the computer instead of shutting it down. You will be logged back into your account automatically. Note: If you see a blank screen, wait for a few minutes to ensure all updates are completed, and then force shutdown the computer. Option 3: Regular Mode Upgrade If you're already in the regular user mode of Windows (not during OOBE or audit mode): Go to Activation Settings : Press Windows key + I to open Settings . Navigate to Update & Security > Activation . Click Change Product Key . Enter the upgrade key in the prompt. If you encounter any issues, you can open Command Prompt with administrative privileges and enter the following command to apply the key manually: Changepk.exe /ProductKey XXXXX-XXXXX-XXXXX-XXXXX-XXXXX Replace XXXXX-XXXXX-XXXXX-XXXXX-XXXXX with your upgrade key.