Avast free. Yup I tried using offline version- same problem. As for “partition” I don’t create another one, just wanted to make it clear that I choose default partition. I download installer from official Avast site.
If, when reloading your Windiws 10 Home, you used a recovery partition, it is possible a third-party antivirus or Malwarebytes Anti-Malware was still running, even if you uninstalled it. https://forum.avast.com/index.php?topic=211973.0