For installing and conducting a set up of Avast antivirus it is advisable that the user follows the below given steps – • Go to the Avast official website. • There click on the download button. • Get the installer file downloaded and saved. • Run the installer file on the system. • Then click on “customize” given just below the install button. • Uncheck everything except for the shields • As everything gets ready then in the set up window click on the install Button • Then click the continue button. • After that click on “finish button.” • Then get your system restarted and for more help visit at Avast Support Number & http://www.avast-phone-number.com/ & http://www.avast-phone-number.com/blog.html