Virus Defnition wont update?

started close to a week ago they will not update even if I give a manual command to do so

First steps:

  1. Download the latest version of Avast (http://www.filehippo.com/download_avast_antivirus/)
  2. Download the Avast Uninstaller (http://www.avast.com/uninstall-utility)
  3. Download the Avast Cleanup Tool (http://www.rejzor.tk/2012/08/19/avast-cleanup-tool-1-0-released)

Second Steps:

  1. Use the Avast Uninstaller. Be sure to select the proper version your trying to uninstall from the drop down menu. Also make sure your point the uninstaller to the director of the installation which is usually C:/Program Files/Avast.
  2. Reboot
  3. Run Avast Cleanup Tool.
  4. Reboot.
  5. Install a fresh copy of Avast

Be sure you do nit have any 3rd party firewall which could be blocking Avast’s updater. The only other thing is that a malware infection can stop your antivirus from updating.

Without knowing what system the OP is using this tool may not be compatible as it’s only recommended for vista/win7

The latest versions of avast can also be found here on the forum
http://forum.avast.com/index.php?topic=103687.msg830212#msg830212

avast Pro with windows 7

I would suggest you procceed with a repair of avast and a reboot first to see if that helps, if not then go ahead with a clean install.

What errors are you getting on the auto update or when you try the manual update ?

it says initializing on the updates page but nothing happens it just sits there and the bar doesnt fill up

OK, try the avast repair for a first step if that doesn’t work then a clean install.

Try a repair of avast:
Win7 - Control Panel, Programs & Features, uninstall a program, select ‘avast! Anti-Virus,’ click the Change/Remove button and select Repair, click next and follow.

You may need to reboot after the repair.

This has in the past resolved this out of sync issue between reported and actual VPS version.