When trying to log on using Firefox, I keep getting error messages:
I then found out that this message appeared for EVERY web site I tried! It was obvious that the problem was at MY computer. I checked every setting for Firefox and Avast.
I deleted Firefox and reinstalled it again, thinking that it was the root of the problem. When I tried to launch Firefox again, I still got the SAME error. I recently had to reinstall Avast because I could not open scan reports. As soon as Avast was deleted and I did a restart, Firefox worked perfectly. The offending program was Avast. I decided to NOT to use that program again! My computer has worked perfectly ever since.