I've looked through some of the related threads in the Norton forum and the problem does seem more prevalent if your allow Firefox to auto-update (i.e., when Tools | Options | Advanced | Firefox Updates | Automatically install updates... Choose the option to Restore & Exclude this File to ensure Norton Auto-Protect does not re-quarantine Once the file is restored to its original location you should also submit a false positive report to Symantec as instructed at https://submit.symantec.com/false_positive/ to ensure Symantec is aware of the problem and has a sample of the file for analysis.Once the download is complete, your machine may reboot and begin the update process.If all works well, you should see the screen messages that you saw when you first installed Windows 8 on your machine.This version was the first Symantec product to use SONAR to detect zero-day viruses.The Norton Suite I have on my PC is the one from Comcast/Xfinity.
Regardless, it might be a good idea to post in Pixma's thread Problem With Firefox 36.01 Update and let them know your was quarantined when your FF browser auto-updated, since that is the thread that Symantec employee Mohan_G is supposedly monitoring. Since this is a known false positive for Win XP users, you can restore your file from quarantine as instructed in the Norton support article Restoring an Item from the Quarantine to get Firefox working again if this problem reoccurs in the future.What distinguished this suite from Norton Internet Security is the inclusion of optimization and problem solving tools.Norton 360 was distributed as a boxed copy, download or was preinstalled on computers as OEM software.Whenever Firefox auto-update runs Norton360 detects a virus in the updated file (the virus is identified as: Suspicious. B a heuristic virus) and deletes it from the "Mozilla firefox/updated" folder. Whenever Firefox auto-update runs Norton360 detects a virus in the updated file (the virus is identified as: Suspicious. B a heuristic virus) and deletes it from the "Mozilla firefox/updated" folder. I've experienced this error condition for several of the recent updates to Fire Fox (38.0.5 Funnelcake June 2015 Mozilla 39-1.0).When Firefox tries to restart it inevitably crashes. When Firefox tries to restart it inevitably crashes. My security system is Comcast-supplied Norton Security Suite Ver. Now, when an automatic update to Fire Fox is announced, I avoid this error by 1) disabling NSS Auto Protect, 2) installing the latest Fire Fox update, 3) re-enabling NSS Auto Protect.I am now going to review Kaspersky and a few other highly rated programs and buy a full program with USA 24/7 support.