How to Insert the License:
https://support.avast.com/index.php?languageid=1&group=eng&_m=knowledgebase&_a=viewarticle&kbarticleid=682
How to Convert a 4.0 License to a 6.0 License:
http://www.avast.com/resend-license.php
- Make sure you use the same email as you used to register for the 4.0 license.
If the above does not help, you can also contact Avast: http://www.avast.com/contact-form.php?loadStyles, use the drop down menu for Sales Inquiry and you can also give them a link to this thread. You can continue to get support for your issue here on the forum.
You really should upgrade your version of Avast to the current version of 6.0.1125. The virus definitions of Avast 4.8 have been discontinued (or will be any day now). You are better off doing an Avast uninstall using the Avast Uninstaller Tool and doing a clean install:
- Save a copy of Avast for the product you need and save it to your HDD:
http://www.avast.com/download-software – 6.0.1125
- Download the Avast Uninstall Utility http://files.avast.com/files/eng/aswclear6.exe and save it to your HDD.
- Disconnect from the Internet at this time.
- Go to Control Panel and uninstall Avast through Add/Remove Programs if possible and reboot.
- If Step 4 fails, boot into Safe Mode (hit F8 repeatedly) and run the Avast Uninstall Tool. Uninstall ALL previous versions and products of Avast you had on this machine one at a time and reboot in between.
- Reboot.
- Install the newest version of Avast and reboot.
- Get Internet access and register your copy or add the license key for Pro.
- Update the Avast definitions.
Let us know if you have additional questions and if the above suggestions fix your problem. Thank you.