Upgraded from 6. The registration screen has only a button to insert a license file for upgrading to the paid version. Current license has 42 days remaining. I already got the new license key. Does the register button appear after 30 days remaining or something or is this abnormal? I simply installed avast_free_antivirus_setup.exe over existing my installation.
Does the register button appear after 30 days remaining or something or is this abnormal?yepp i think so If your program is up and working then you dont have to worry......yet..... just wait and see ;)
and you dont need a license key to register avast free online
On-line registration of avast! Free Antivirus 7.x
https://support.avast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=1073#idt_01
The update to avast7 from avast6 will retain the old registration, when you get closer to the expiry/renewal date, you will get notifications and the avastUI, Maintenance, Registration section will change to allow registration as outlined in the link Pondus gave.
Thanks. We’ll see in 5 days 
You’re welcome.