From FAQ:
"Q: I was successfully registered for using avast antivirus program and I received the activation key. However, when I try to enter the key, the program says "Invalid license number". Why?
A: The activation key is valid. Use copy & paste method to enter it into avast!; keep in mind that this number canĀ“t be used on any server operating system. Besides, you have to be logged in Windows with administrators rights (to enter they key)."
The same problem - no answer above!
Win98SE; no server (alone home PC).
I received license key and used avast!4... four days!
However, after 'bad' shut down today, I cannot start it again!
It shows me "License key is not entered" pop-up window; I click "OK";next window - "Registration" - I 'use copy & paste method to enter' the key (from "avast! Registration" mail); next time click "OK"; and..."Invalid license number" at the end !!!!!!!!!!!
What's going on?
How to fix this?