Avast Premium Security (previously Avast Premier) is a comprehensive security software that prevents viruses, spyware, and other malicious threats from infecting your PC. Additionally, it protects you and your data against dangerous fake websites, ransomware, hackers, and spammers while you are online.
Install Avast Premium Security
- Log in to Windows as a user with administrator permissions and ensure no other application or antivirus software is running on your PC.
- Click the button below to download the Avast Premium Security setup file, and save it in a familiar location on your PC (by default, downloaded files are saved to your Downloads folder).
Download Avast Premium Security - Right-click the downloaded setup file
avast_premium_security_setup_online.exein File Explorer and select Run as administrator from the context menu.
- If prompted by the User Account Control dialog for permissions, click Yes (or Continue on older versions of Windows).
- To change the default setup language, click the current language in the top-right corner of the screen, then click Install to proceed with default installation.
- To change the default setup language, click the current language in the top-right corner of the Avast Setup screen, then select Customize to proceed with custom installation.
- Click Change to manually select your preferred location for saving Avast Premium Security program files, then select or deselect program components to install, and click Install.
- Wait while setup installs Avast Premium Security on your PC.
- Click Continue on the screen below the message You are protected.
- Review the Avast Privacy Policy and click Continue.
- If prompted to protect your mobile device, follow the on-screen instructions and click Send, or click the
Xicon to close the screen.
Avast Premium Security is now installed on your PC and ready to use, but some components may not fully function until you restart your PC.
Open and Activate Avast Premium Security
- Open Avast Premium Security in one of the following ways:
- Double-click the Avast Premium Security icon on your desktop.
- Right-click the
Avast system tray icon on your Windows taskbar and select Open Avast user interface. 
- Activate Avast Premium Security using the valid activation code from your order confirmation email, or via your Avast Account registered for the email address you used to make the purchase. For detailed activation instructions, refer to the following article:
Troubleshooting
If you experience any installation issues:
- Ensure your PC meets the minimum system requirements and your Windows is up to date.
- Windows 10 except Mobile and IoT Core Edition (32 or 64-bit); Windows 8/8.1 except RT and Starter Edition (32 or 64-bit); Windows 7 SP1 or higher, any Edition (32 or 64-bit)
- Windows fully compatible PC with Intel Pentium 4 / AMD Athlon 64 processor or above (must support SSE2 instructions)
- 1 GB RAM or above
- 2 GB free space on the hard disk
- Internet connection to download, activate, and maintain program updates and antivirus database
- Optimally standard screen resolution no less than 1024 x 768 pixels
- Check that the downloaded setup file is not corrupted. For instructions, refer to the following article:
- Uninstall all your previous antivirus software from your PC. For instructions, refer to the following articles:
- Restart your PC, and try again to install Avast Premium Security by following the instructions in this article.
If the issue persists, contact Avast Support and provide your setup log file. For instructions, refer to the following article:
- Avast Premium Security 19.x
- Microsoft Windows 10 Home / Pro / Enterprise / Education - 32 / 64-bit
- Microsoft Windows 8.1 / Pro / Enterprise - 32 / 64-bit
- Microsoft Windows 8 / Pro / Enterprise - 32 / 64-bit
- Microsoft Windows 7 Home Basic / Home Premium / Professional / Enterprise / Ultimate - Service Pack 1, 32 / 64-bit