In rare cases, the help within Avira Mac Security is not available anymore once you have installed and uninstalled the application several times. You need to clear the help cache to fix the problem.

Please follow these steps:

1. Quit Avira Mac Security
2. Quit help viewer (with Avira or any other application)
3. Open the Terminal and enter the following command to end the process “helpd”
   

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   sudo killall helpd

   ---

4. Remove "com.apple.help" in Preferences with

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   rm /Users/*yourusername*/Library/Preferences/com.apple.help.plist
   and
   rm /Users/*yourusername*/Library/Preferences/com.apple.helpviewer.plist

   ---



5. Remove "com.apple.helpd" in Caches with

   ---

   rm –r /Users/*yourusername*/Library/Caches/com.apple.helpd
   and
   rm –r /Users/*yourusername*/Library/Caches/com.apple.helpviewer

   ---

Help should now be available again.