Avast One License Files

How do I enter in my Avast License file or Avast key into the new Avast One Essential?

When you sign into your Avast account, it automatically recognizes your license.
That was my experience.

I did log in however, it did not recognize my license.

Have you restarted your system?
If you’re still having a problem, contact customer support.
https://support.avast.com/en-ww/contact/

Can’t login after add License File

Hi,

Are you referring to Avast One or Avast (Premium /Free)? To activate Avast One, please see this guide: https://support.avast.com/en-ww/article/Activate-One/