Have downloaded internet security 2014 from 3 different places but get same message. Tried with windows 7 and windows 8.1, all give same message. Anyone else have this problem?. May have to use different make of protection.
Have you removed previous used AV before installing avast?
See www.avast.com FAQ section and search for third party removal
Thanks for your prompt reply. well I was using avast free edition and tried to install on top of that but got this error message. So did uninstall via control panel and restarted computer with windows 7. Then did an uninstall on windows 8.1 with free avast 2014 on it, then tried to install internet security 2014. All time same message.
'd try a clean install with the online installer, it’s fixed alot of issues with people…
- Download Avastclear, Rejzors uninstall tool and the appropriate Avast program edition
Note : You need to be ONLINE during the install (sometimes online installer works whereas offline doesn’t)
http://files.avast.com/iavs9x/avast_free_antivirus_setup_online.exe
http://files.avast.com/iavs9x/avast_pro_antivirus_setup_online.exe
http://files.avast.com/iavs9x/avast_internet_security_setup_online.exe
http://files.avast.com/iavs9x/avast_premier_antivirus_setup_online.exe
Avastclear : http://files.avast.com/iavs9x/avastclear.exe
Rejzors Uninstall tool: http://rejzor.wordpress.com/avast-cleanup-tool/
- Uninstall Avast by control panel [If you don’t have Avast in control Panel go to #4]
- Uninstall in safe mode using Avastclear.
- Run Rejzors Uninstall Utility in Normal Mode (removes traces avastclear doesn’t) - reboot.
- Install the version you downloaded.
- Reboot.
Thanks Alikhan will give it a go later today.