Sorry this post will be long, but I want to give you all the information I can.
Problem: I am unable to download files from email attachments or online using Firefox. I am able to download files using Internet Explorer. I was able to download files using Firefox 29.x, but have not been able to with any updates following. I reverted back to 29.x after updating to 30.x assuming that it would correct itself in the next update. However, I updated to 33.x yesterday and have the same problem. Upon running Malwarebytes and SuperAntiSpyware I have numerous tracking cookies that reappear with each scan without surfing the internet (They are usually in a Mozilla/Firefox folder even though I have not opened FF. FF seems to be running really slow since the update also.
When trying to download the file FF goes to Not Responding (if left alone it will do it for hours.) Click anywhere on the screen again and it says that FF has stopped responding and ask to "Close program now" or "Wait for program to respond". When you close the program it gives you a progress bar and says searching the internet for a solution. The program then shuts down.
Windows 7 Home Premium
Service Pack 1
Intel Core i3-2310M CPU @ 2.10GHz
Ram 4.00 GB
64-bit Operating System
Windows updates are all up to date.
Currently using Symantec/Norton. I removed AVG and installed Symantec/Norton yesterday morning after discovering that Firefox was not allowing me to download files and began to wonder if there may be a virus that was causing it.
I have ran all 3 virus/malware programs. (Numerous tracking cookies reappear)
I have cleared, deleted, and changed the download folder for FF.
I have cleared all cookies and temp files.
I have fully uninstalled FF and reinstalled.
I have created a new FF profile.
I have tried to download files in FF safemode.
I have disabled all extensions and plug-ins. I have also verified that it is running the default theme.
Restored FF default settings.
I have temporarily disabled Norton to verify that it was not a prolonged scan of the file causing the problem.