Avast 2014 won't start on windows 8.1 pro 64bit

Avast Free Antivirus / Premium Security
1

Hello.
Avast 2014 won’t start on windows 8.1 pro 64bit.
Thank you.

2

Have you installed Avast fresh, or updated from previous version?

Did you tried repair option?

3

I suggest an installation from scratch:

  1. Download the latest version of avast! Uninstall Utility and save it.
  2. Download the latest avast! version and save it.
  3. (Optional) If you want, save your avast! settings for later restoration (Settings > Maintenance > Back up).
  4. Uninstall avast! from Control Panel (if possible) and reboot.
  5. Run the avast! Uninstall Utility saved on 1 in and follow the instructions. Reboot in Normal mode after that.
  6. Install avast! using the setup saved on 2. Register your free copy or add the license key for the paid versions. Boot.
  7. Check and post the results.

Please, be patient, boot when it’s said to boot…

4

Thank you. Working now after i applied your solution.

5

Good! Sometimes we got happy to be useful in this life :slight_smile: