Question for my license key !!

Hello,

I need your help for my problem with my license key on AVAST.

If use my key for register my version of Avast 4.x home, I have a message in my windows “license key is disabled”

Can you help me ?

Thank You and sorry for my anglish text ^^

What Avast version are you using? Avast Pro or Avast Home ?

If your using Avast Pro, i cant help you.

If Avast Home,you can renew your key here

Oh … Thank you for you replay but I use Avast PRO (4.8) in my computer …

See the tutorial: http://www.avast.com/files/tutorials/insert_key.htm
Please take a look here: http://www.avast.com/eng/faq-invalid-license-number.html

What is the exactly error message?
Is your system date/time correct?
Do you use copy & paste method?
Are you sure you do not include the ‘last blank space’ in the paragraph while copying & pasting?