Download Symantec Norton AntiVirus X 9.x-10.x Update for Mac January 1, 2023 Download

Norton Anti-Virus 9.x/10.x Defs are the latest antivirus files.

The installer will automatically update Norton AntiVirus for Mac virus definitions and engine files to detect and repair the most recently detected Macintosh viruses. This file is a self-extracting archive that contains the Norton AntiVirus Virus Definitions Installer.

Once downloaded and expanded to your hard drive, simply double-click the installer and the appropriate files will be installed on your computer.

They are also available via the LiveUpdate feature in Norton Anti-Virus 9.x/10.x.

To update Symantec Norton AntiVirus for Mac:

• Click on the download now button found here.
• Depending on the version of your Norton product, the Intelligent Updater file should be:
  • For Norton AntiVirus 11.x (Intel processor), click the first file name in the list. The file name starts with NavM_Intel_Installer. eg NavM_Intel_Installer_20110323_US.zip.
  • For Norton AntiVirus 11.x (PowerPC processor) and Norton AntiVirus 10.x or earlier versions (PowerPC or Intel processor), click the second file in the list. The file name starts with NavM9_Installer. e.g. NavM9_Installer_20110323_US.zip.
• Once the file is downloaded, extract the zip file.
• Double-click the SymantecAVDefs_ppc.pkg installation file.
• If prompted, enter your administrator password.
• Click Install.
• After the virus definitions are updated, click Finish at the next prompt.