To know about how to reactivate avast free, you can follow these steps below:
1. Open avast antivirus
2. Register at avast
3. Now, click on the Green button to activate
4. Follow the registration process
5. When you successfully renewed antivirus then try to activate avast antivirus
Hopefully, the above steps will help you to fix the issue if not you can also follow our blog on how to renew avast free.