The kaext2.dat file is part of Kingsoft AntiVirus Engine from Kingsoft Corporation. Like the name suggest, they produce antivirus software in addition to other Internet security programs.  The latest version is Kingsoft Internet Security 9+.

Created by:
Kingsoft Corporation

Part of:
Kingsoft AntiVirus Engine

Typical Errors:
File Not Found
Missing File
Exception Errors

Common Path(s):
%programfiles%\kingsoft\kingsoft internet security 2008

Category:
Registry Error

Error Description:
The kaext2.dat error is a registry error with the Kingsoft program. Your antivirus software will not function properly until the error is resolved. While the error itself is not malicious, your computer is at risk of malicious attacks while the antivirus software is not working properly. You need to resolve this error quickly to protect your computer.

Resolution:
All registry errors can be resolved manually by using “Regedit”. However, this is never recommended. If you do not know what you are doing, you can damage your computer.

It would be easier to uninstall and reinstall the antivirus program to resolve this error.

The most effective method to resolving registry errors is with a registry cleaner. ZookaWare PC Cleaner will fix the kaext2.dat error and all other registry errors on your computer guaranteed. This will also make your computer run like new again.