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Troubleshooting in Norton AntiVirus for Macintosh Startup problems

I can’t install Norton AntiVirus for Mac OS X v10.1

You must start your computer in Mac OS X v10.1 to run the Norton AntiVirus for Mac OS X v10.1 installer. And you must know your administrator password to install Norton AntiVirus.

Library file error message

If you experience problems with library files immediately after installing, you might still have incompatible files from a previous version of Norton AntiVirus for Macintosh. Delete the Norton AntiVirus Additions folder from the Extensions folder in your System Folder and reinstall Norton AntiVirus.

Startup problems

Startup problems could be due to problems with your computer, with Norton AntiVirus, or with settings you have made.

Norton AntiVirus Auto-Protect fails to load when I start my Macintosh If Auto-Protect fails to load, any of several things could be the problem:

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Norton AntiVirus Auto-Protect may have a conflict with one or more of your other system extensions. Check the Norton AntiVirus Read Me file for the most up-to-date information on compatibility with other system extensions. If the Norton Read Me file does not provide the answer see “General Macintosh troubleshooting” on page 118.

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In Mac OS 8.1-9.x, if you are using an extension manager program, the program may have disabled Norton AntiVirus Auto-Protect. Start the extension manager program and make sure Norton AntiVirus Auto- Protect is enabled.

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Your copy of Norton AntiVirus Auto-Protect could be damaged in some way. In Mac OS 8.1-9.x, reinstall Norton AntiVirus Auto-Protect using the Custom install option.

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Make sure all engine files and virus definitions are installed. Norton AntiVirus does not run without them. For a list of all the installed files, see the NAV Install Log File located on the root of your hard disk.

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