Solved HTTP Certificate problems after updating Firefox browser

Hewlett-packard Hp pavilion desktop pc p...
August 19, 2015 at 18:45:26
Specs: Windows 10 Home 64 bit, 8GB Ram
I recently upgraded four HP computers to Windows 10 and so far everything has worked fine. Three are desktops and one is a laptop. The PC’s are all relatively new. The laptop is several years old. Over the weekend, I installed the Firefox 40 and 40.2 upgrades on all of the computers, but now I can't access my Yahoo start page, Yahoo email or any search related to Yahoo on one of the HP desktops. It’s an HP P7-1234. I have two of these and the other one is fine. I've reset Firefox, uninstalled it with Revo Uninstaller and reinstalled it and also performed a system restore to a restore point dated a few days before this happened, however, the problem continues. I’ve run several malware scans including one from Microsoft and I’m confident that the computer is clean. Firefox launches okay, but the search engine won’t open anything related to Yahoo or even to Firefox. I keep getting a window saying something about invalid security certificates. My computer and Firefox was working fine just before the browser upgrade. When I try to do a search, I get a white window with no background images or graphics and all text is gathered in a single column running down the left of the screen. I can open anything from my saved bookmarked files and there's no problem, unless the bookmark is Yahoo or Firefox related. If I try to open My Yahoo, my Yahoo mail of perform a Yahoo search, I get the error message about certificates. The strange thing is that this only happens on one of my computers. The other computers were also upgraded to Windows 10 and they also got the Firefox 40 and 40.2 upgrade but have not had this issue. I’ve been searching online to see if there were any discussion groups related to this problem, but I’m finding nothing that is recent. Most discussions concerning certificate issues in Firefox are several years old. It would seem that when I upgraded this one computer to Firefox 40 and then to 40.2, Firefox did not like some of the security certificates saved within Firefox itself. I am not at all that familiar with the topic of certificates. I always assumed that they just came with the browser and I’ve never tampered with them. I know that they reside in Options/Advanced/ Certificates. Maybe the certificates for Yahoo have expired or are damaged, although I must stress that the other computers have the same certificates and they are still working fine. I just need to know if anyone has any suggestions as to how I might fix this problem, in simple terms? This is all new to me. I’ve never had something like this happen just by upgrading Firefox.

See More: HTTP Certificate problems after updating Firefox browser

Report •

#1
August 19, 2015 at 20:43:30
✔ Best Answer
If you are running AVG, Kaspersky or Avast AV, read THIS and THIS.

i_Xp/Vista/W7/W10 User


Report •

#2
August 22, 2015 at 10:19:33
Thank you XpUser!!!!!!

I've been searching for answers to this issue for a week and was coming up with nothing. I spent more time trying to figure out how the security certificates could have gone south on just this one computer, when the others that I have are running the same browser and are all fine. Even though I regularly follow tech postings and events in computing, I wasn't seeing anything that even remotely seemed like the problem I was having. This was the first I've heard about the issues with Avast. It never occurred to me that the problem could have been caused by Avast. Naturally, the affected computer is the only one that runs Avast. I use Norton on everything else. I followed your links and couldn't believe that the solution was going to be this simple. Still, I did it and, thanks to your assistance, everything is running perfectly fine once again. This was the first time in a long time that I was really stumped on a computer problem. I'm glad that you saw my posting and were good enough to share the solution with me. I can't thank you enough!! :-)

message edited by casper06067


Report •

#3
August 22, 2015 at 11:18:23
Hello Casper06067 -

Just saying thank you once is enough for me. I'm glad I could help. Thanks for posting back to let us know what work for you.

i_Xp/Vista/W7/W10 User


Report •
Related Solutions


Ask Question