Upgrade to the newest version of Avast for the best protection.
JAN 2017 UPDATE: Virus definition updates have been discontinued for Avast version 4.8.
The first release of Avast version 4.8 was launched in March 2008, and the latest update was released in November 2009. Nearly seven years later, there are still a group of loyal Avast users who run Avast 4.8. Since we know that this change will affect 4.8 users, we’ve put together a quick list of questions and answers to help make transitioning to the newest version of Avast as smooth as possible.
How do I update to the latest version of Avast from version 4.8?
This blog post walks you through updating your Avast to the latest version of the program.
Uninstall your Avast product. Please refer to this FAQ for detailed uninstallation steps.
What happens now that the virus definitions for Avast version 4.8 have ended?
Avast is no longer providing updates for version 4, but your Avast product will still function; however, please be aware that your protection will be compromised. We strongly recommend updating your version of Avast to benefit from important protection features and up-to-date virus definitions.
Why should I update my program version?
When you have the latest version of Avast, the program and virus definitions are updated automatically. This way, we guarantee that you’ll always have the most powerful, up-to-date version of Avast at any given time.
What’s more, the Avast Antivirus Nitro Updateis lightweight, delivers improved performance and includes our latest CyberCapture technology with zero-second threat detection against unrecognized files.
In addition to receiving the most advanced protection from the Avast Antivirus Nitro Update, our online help services and customer care team are best equipped to support recent versions of Avast. Updating to the latest version of Avast allows us to deliver the fastest and highest quality of support to our users.