The update bumps the software version to 188.8.131.52 and the definitions file to 184.108.40.206. The result is that the AntiVirProActiv component starts detecting critical processes as malware, including the following:
Those are just some of the false detected Windows processes. Avira sometimes kills them and stops Windows from booting, but that’s not the end of it.
The update is also blocking other Microsoft software (such as Microsoft Office and Microsoft Works) as well as various third-party applications, including Byki 4 Express, Documents To Go, Garmin, Google Talk, iPod and Palm services, Opera, OpenDNS Updater, Polipo, Shadow, Stickies, and many others. In other words, almost every executable file is being falsely detected by this update.
The free edition (Avira AntiVir Personal) does not include ProActiv, so it is not affected!