AVG can be installed on Windows XP (SP3), Windows Vista, Windows 7, Windows 8/8.1 and Windows 10, both 32-bit and 64-bit systems. However, since Service Pack 3 was released only for Windows XP 32-bit, Windows XP 64-bit is not a supported operating system.

Note: Windows 2000 and older operating systems are not supported. If you are using Windows XP SP2, install a newer service pack to be able to install and use AVG. For more information and recommendations please refer to the document AVG Legacy OS support.

Minimum system requirements for AVG:

Processor: Intel Pentium 1.5 GHz or faster
Memory: 512 MB of RAM (Windows XP) / 1024 MB of RAM (Windows Vista, Windows 7, Windows 8/8.1 and Windows 10)
Hard disk free space (for installation):

• AVG AntiVirus Free: 1200 MB
• AVG AntiVirus: 1300 MB
• AVG Internet Security: 1300 MB

Recommended system requirements for AVG:

Processor: Intel Pentium 1.8 GHz or faster
Memory: 1024 MB of RAM
Hard disk free space (for installation):

• AVG AntiVirus Free: 1500 MB
• AVG AntiVirus: 1600 MB
• AVG Internet Security: 1600 MB