If you think you installed the wrong edition, select Start > Settings > Update & Security > Activation and then select Troubleshoot. If you choose an edition other than the one you’re licensed to use, you may receive the above error. When you reinstall Windows 10 using a digital license, you’re asked to choose which edition to install. You reinstalled the wrong edition of Windows 10. For more info, see Reactivating Windows 10 after a hardware change. If the troubleshooter can’t resolve the issue, you’ll see a link to reactivate after a hardware change. To access this exception path, select Start > Settings > Update & Security > Activation and then select Troubleshoot. You’ll need to be signed in to the same Microsoft account before making the hardware change and to use the exception path. In addition, Microsoft provides an exception path for transferring a Windows License after a hardware change. If you have a Windows product key you used on your PC before the hardware change, enter it by selecting Start > Settings > Update & Security > Activation and then selecting Change product key. To purchase a new Windows license, select Start > Settings > Update & Security > Activation, and then select Go to Microsoft Store. If Windows was preinstalled on the PC, then a new license is required if you have made a change such as replacing the motherboard. If you make significant hardware changes, such as replacing your motherboard, Windows won’t be able to find a matching license the next time you start your PC. A Windows license is associated with your PC hardware. You changed the hardware on a previously activated Windows 10 PC.

In Microsoft Store, follow the instructions to buy a license for Windows. To buy a digital license online, select Start > Settings > Update & Security > Activation, and then select Go to Microsoft Store.

In this case, you’ll need to provide a valid 25-character Windows 10 product key or purchase a Windows 10 digital license to activate. This is the first time Windows 10 has been installed on this PC. If you see error code 0x803F7001, it means that a valid license couldn’t be found to activate Windows on your PC. This can happen for several reasons:

Microsoft treasure hunt 0x803f8001