What would you like to protect?
Having trouble with your device?
Avast Antivirus - Frequently Asked Questions
Installation of Avast Free Antivirus
Registration of Avast Free Antivirus
Installation of Avast Internet Security
Activation of Avast Internet Security
Difficulties with your license?Visit our License Center.
Download the most recent installation files from Avast
Did we mark a clean file as malicious? Report a false positive.
We're sorry to hear that. If you didn't find the answer you were looking for,try these other options:
Take a look at our help articles or ask a question in the Avast Forum.
Need help with one of our premium products?
Avast recommends using the FREE Chrome™ internet browser.
Protect all of your devices with the world’s leading cyber security software.
1988-2017 Copyright Avast Software s.r.o.