Information Technology

After downloading a newer version of Thunderbird or Firefox and following the instructions, you may receive an error that you don't have sufficient permissions to move the program to the Applications folder.  Try this:

• Quit the program you are trying to update.
• Navigate to your Applications folder and locate the current program.
• Drag that file to the trash.
• Now you can copy the new version to the Applications folder.

Even with admin privileges in your OS X account, you don't have the ability to overwrite a file in the Applications folder.  You can still delete and add files - you just can't overwrite the file.