Reinstalling

General Topics
1

For some reason I no longer have the program installed, how do I re-install?

2

Installation Guides and Manuals http://www.avast.com/eng/download-user-guides-and-manual.html

avast! 4 FAQs http://www.avast.com/eng/faq-avast-4-home-professional.html

Register your free product http://www.avast.com/eng/home-registration.php

How to insert activating key http://www.avast.com/files/tutorials/insert_key.htm

download http://www.avast.com/eng/programs.html

3

I suggest an installation from the scratch:

  1. Download the latest version of avast! Uninstall Utility and save it.
  2. Download the latest avast! version and save it.
  3. Uninstall avast from Control Panel (if possible). If, for any reason, you can’t run it, try booting in Safe Mode and doing it from there. Anyway, boot after that.
  4. Run the avast! Uninstall Utility saved on 1. If, for any reason, you can’t run it, try booting in Safe Mode and doing it from there. Anyway, boot after you’ve run it.
  5. Install avast! using the setup saved on 2. It will be good to accept the boot time scanning. Boot.
  6. Insert the license key.
  7. Check and post the results.