avast! 4 Professional Edition 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.

It represents a best-in-class solution for any Windows-based workstation. This page demonstrates its most important features and provides links to further resources.

The latest version of avast!

antivirus kernel features outstanding detection abilities, together with high performance.

You can expect 100% detection of In-the-Wild viruses (viruses already spreading between users) and excellent detection of Trojan horses.

The kernel is certified by ICSA Labs; it frequently takes part in the tests of Virus Bulletin magazine, often yielding the VB100 award.

The avast! engine also features outstanding unpacking support. It can scan inside the following archives: ARJ, ZIP, MIME (+ all associated formats), MAPI (Outlook pst files), DBX (Outlook Express archives), RAR, TAR, GZIP, CAB, BZIP2, ZOO, ACE, ARC, LHA/LHX, TNEF (winmail.dat), CPIO, CHM, RPM, ISO, 7ZIP and SIS. It also supports a number of executable packers (such as PKLite, Diet, UPX, ASPack, PeShield, FSG, MEW etc.).

Simple User Interface

The Simple User Interface is used to start on-demand scanning, work with the results and change various options.

Basic resident protection settings can be modified here. The Simple User Interface is the main application of avast! 4 Home Edition. You can start additional avast! modules from here, such as the Virus Chest, Updater or Log Viewer. The appearance of the Simple User Interface is very flexible. It supports so-called skins (changeable appearance of the application), so you can change the interface to suit you. The main package contains three skins, with additional skins available from our web pages.

Download avast! Professional Edition 4.6.744