Manually update your Avast anti-virus versions.

Licence Type: Freeware

Operating Systems Support: Microsoft Windows

Download Link: avast! Virus Definitions

Developers Homepage: ALWIL Software

avast! 4 is a collection of award winning, high-end technologies that work in perfect synergy, having one common goal: to protect your system and valuable data against computer viruses. avast! represents a best-in-class solution for any Windows-based computer

iAVS is a fast, small, incremental and fully automated update via the Internet. Updates are released at least twice a week