Avast is a company that produces antivirus software. There are multiple versions of the software ranging from free to various paid options. Avast Free Antivirus is the free version. It can only be installed for home use. Avast Pro Antivirus is customizable and provides virtualization technology. Avast Internet Security is the highest tier. It includes software that blocks SPAM and protects data and identity information. Avast recommends this version for business use. Reinstalling Avast becomes necessary when the software becomes corrupted or stops working. Writer Bio
