If the Windows 11 Home to Pro purchase was made through Microsoft Store, the Pro entitlement is normally a digital license tied to the Microsoft account used for the purchase, not a separately shown product key.
Use this path:
- Check the current activation state:
- Start > Settings > System > Activation
- Confirm whether the device shows Windows Home, Windows Pro, or Windows Enterprise, and note the activation status.
- If the device is still on Windows 11 Home and the Store upgrade failed:
- Disconnect the PC from the internet.
- Go to Start > Settings > System > Activation.
- Select Change product key.
- Enter this generic Windows 11 Pro key:
VK7JG-NPHTM-C97JM-9MPGT-3V66T - Start the edition upgrade.
- Restart the PC.
- Reconnect to the internet and sign in with the same Microsoft account used for the Microsoft Store purchase.
- If the device now shows Windows 11 Enterprise instead of Pro:
- Disconnect from the internet.
- In Settings > System > Activation > Change product key, enter the same generic Pro key:
VK7JG-NPHTM-C97JM-9MPGT-3V66T - Restart the PC.
- Reconnect to the internet.
- If Activation Troubleshooter offers Upgrade to Windows 11 Pro, select it and then Start upgrade.
- If Windows is not activated after the edition is correctly shown as Pro, verify that the Microsoft account signed in on the device is the same account that received the Store purchase confirmation, because Store-bought Pro upgrades use a digital license associated with that account.
- Activate Windows
- Activate Windows
- Using the Windows Activation troubleshooter
- Install or upgrade Windows using a product key
- Windows 11 cannot activate after upgrading it to Pro using Microsoft Store - Microsoft Q&A
- windows 11 upgrade fails - Microsoft Q&A
- Windows Activation when upgrading from Home to Pro - Microsoft Q&A
- windows 11pro upgrade error - Microsoft Q&A