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Windows 7: Firefox update has caused a problem

14 May 2016   #1

Windows 7 x64
Firefox update has caused a problem

I'm a newbie on this site so if this question has already been asked, then apologies.
I recently updated Firefox (April 12, 45.0.2) which has long been my preferred browser, and since then I am getting locked out of all sorts of sites I would normally visit. I can no longer play youtube music, just get a black screen that eventually stops on an error message. I can no longer access MSN games on line and some sites are coming up with a security warning that seems to be related to site certificates being incorrectly configured. On some of these, there is an option to allow, and some will open, but others just revert to a white window with an indexed list in blue, none of which help as they wont open.
I checked with my AV provider and they ran a diagnostic on their software, Eset security 9, ( updated this at the same time) and it all checks out. So the problem appears to be Firefox. I can get into all things with either IE or Chrome, but they're not preferred.
Anybody got a probable cause? I'm not particularly au fait with Win 7 BTW. I have tried uninstalling and reinstalling on May 6 which is now Firefox 46.0.1 but no change.

My System SpecsSystem Spec
15 May 2016   #2

Windows 7 ultimate

I have had the same in Waterfox since 45 for FF (it's an extension of it). They have changed some of the security and it's a royal pain. I have seen though that when you allow it now and future, then you will eventually resolve those issues. Sometimes they show at the top and sometimes bottom of the browser windows also. Anyways, don't suspect it's a Windows issue as it is the same way on FF on my iPad Pro. Might find help faster on the Mozilla boards or FireFox boards, although folks around here are pretty awesome:)
My System SpecsSystem Spec
15 May 2016   #3

W7 home premium 32bit/W7HP 64bit/w10 tp insider ring

follow the directions here

rename the cert8.db file in the Firefox profile folder to cert8.db.old or delete the cert8.db file to remove intermediate certificates that Firefox has stored.
If that helped to solve the problem then you can remove the renamed cert8.db.old file. Otherwise you can rename (or copy) the cert8.db.old file to cert8.db to restore the previous intermediate certificates. Firefox will automatically store intermediate certificates when you visit websites that send such a certificate.

On a side note Ive not had problems on Palemoon or Waterfox when ive updated

AV's now include a safe browser site extention/security certificate check, its more than likely thats causing the problem. Check those first.

My System SpecsSystem Spec

15 May 2016   #4

Windows 7 x64

The only cert files i could find in the profile folder was either cert_overide which is a text document, or cert8 which is a database file while I suppose db stands for but it is not written as cert8.db is this the one you mean?

This is what it did to my attempt to open a you tube clip today.

Attached Images
Firefox update has caused a problem-ffsecurity.jpg 
My System SpecsSystem Spec
15 May 2016   #5

OEM Windows 7 Ult (x64) SP1

Hi, @Foehn:

I know this is going to sound painfully obvious, but....

...please check to be sure your system date and time are correct.

An inaccurate system date/time can contribute to "certificate issues".

<just a thought>

My System SpecsSystem Spec
15 May 2016   #6

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1

RE: MoxieMomma's post. Check time here: Accurate Time

Suggest: Change DNS Lookup Provider to see if it resolves the issue. Try changing to Google DNS. For instuctions see this post:

IE11 & Adobe Flash

Note: Reboot after changing DNS.


Post a screenshot of the results.
Firefox update has caused a problem-howsmyssl-com-2016-05-15-17-12-54.png

My System SpecsSystem Spec
17 May 2016   #7

Microsoft Windows 7 Home Premium SP1 64-bit Build 7600 / Microsoft Windows XP Professional SP3

You can safely delete the cert8.db and cert_overide files, those are recreated by Firefox in case they are missing. Some people experience this because of corrupted certificates files during an update.

Try see if this helps you
My System SpecsSystem Spec
19 May 2016   #8

Win-7-Pro64bit 7-H-Prem-64bit

Hi and welcome to SevenForums,
Yea Firefox is much like Pale Moon
I found switching the url from https to http solves the issue
Have no idea why that works :)
Firefox update has caused a problem-callender.jpg

My System SpecsSystem Spec
19 May 2016   #9

Windows 7 x64

Thanks Trashzone, yes I have tried that but without success. Will try it on a few more sites to see if it makes a difference. Am I right in thinking that s on the end of http means secure?
My System SpecsSystem Spec
19 May 2016   #10

Win-7-Pro64bit 7-H-Prem-64bit

My System SpecsSystem Spec

 Firefox update has caused a problem

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