0x803F7001
No valid license found
What it means
Windows could not find a license for this PC, often after a hardware change.
Common causes
- Motherboard replaced
- A fresh install with a different edition
How to fix it
- Settings > System > Activation > Troubleshoot > "I changed hardware on this device recently" and sign in.
- Make sure you installed the same edition (Home or Pro) you have a license for.