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Firefox stopped working at all after re-install

  • 8 replies
  • 1 has this problem
  • 12 views
  • Last reply by jscher2000

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Hi,

I did a complete uninstall of my Firefox (including the data stored in the /appdata/ folder) after a Unity-based app I've been using through the browser stopped working and re-installing the Unity web engine didn't solve the problem.

However, after I re-installed Firefox, I couldn't open any page (including the firefox pages) or, frankly, use the browser. Is there any fix for this?

Attached are the screenshots of what the browser looks like when booted in safe mode. Normal mode looks the same.

All Replies (8)

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Screens are below:

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What is your computer system and Firefox?

As to pages that look like picture two; Load the page. Then holding down the <shift> key, reload the page.

As to the first picture, you were calling a Firefox internal page. I don't understand why you got a connection warning. Do you have problems accessing the web?

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My os is Windows 10, 64-bit and I was using the latest x86 version of Firefox. I have no internet problems whatsoever.

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Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac=Options)
key, and then starting Firefox. A small dialog should appear. Click Start In Safe Mode (not Refresh).

Is the problem still there?

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Is the problem limited to HTTPS addresses? For example, you can use

http://www.bing.com/

but not

https://www.bing.com/

When you get connection errors for nearly all secure sites, the problem usually is one of the following:

(1) Error in your system's date, time, or time zone, which throws off certificate validity checks. Sometimes allowing computers to use an internet-based time source can introduce this problem.

(2) Firefox not being set up to work with your security software that intercepts and filters secure connections. Products with this feature include Avast, BitDefender, Bullguard, ESET / nod32, and Kaspersky; AVG LinkScanner / SurfShield can cause this error on search sites.

If you have any of these products: This support article will walk you through checking for this problem: How to troubleshoot security error codes on secure websites.

(3) On Windows 10, Firefox not being set up to work with the parental control software Microsoft Family Safety.

To test by turning it off, see: http://windows.microsoft.com/en-us/wi.../turn-off-microsoft-family-settings)

(4) Malware on your system intercepting secure connections.

Hopefully it's not #4. Can you find the culprit?

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FredMcD said

Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac=Options)
key, and then starting Firefox. A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

The screenshots I provided were from Safe Mode, I've noted that in my first post.

jscher2000 said

Is the problem limited to HTTPS addresses? For example, you can use http://www.bing.com/ but not https://www.bing.com/ When you get connection errors for nearly all secure sites, the problem usually is one of the following: (1) Error in your system's date, time, or time zone, which throws off certificate validity checks. Sometimes allowing computers to use an internet-based time source can introduce this problem. (2) Firefox not being set up to work with your security software that intercepts and filters secure connections. Products with this feature include Avast, BitDefender, Bullguard, ESET / nod32, and Kaspersky; AVG LinkScanner / SurfShield can cause this error on search sites. If you have any of these products: This support article will walk you through checking for this problem: How to troubleshoot security error codes on secure websites. (3) On Windows 10, Firefox not being set up to work with the parental control software Microsoft Family Safety. To test by turning it off, see: http://windows.microsoft.com/en-us/wi.../turn-off-microsoft-family-settings) (4) Malware on your system intercepting secure connections. Hopefully it's not #4. Can you find the culprit?

I'm using ESET but the article on configuring it is no longer available. Where can I find the needed info?

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The problem I have is identical to the one described here: http://forums.mozillazine.org/viewtopic.php?f=38&t=3024379

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Jobenheim said

I'm using ESET but the article on configuring it is no longer available. Where can I find the needed info?

What version? I've looked up user manuals in the past, but there probably is a newer version to consult:

ESET Smart Security (ver. 9): http://download.eset.com/manuals/eset_ess_9_userguide_enu.pdf

ESET nod32 (ver. 9): http://download.eset.com/manuals/eset_eav_9_userguide_enu.pdf

  • See section 4.2.3.4 SSL/TLS
    (and sub-section 4.2.3.4.1 Certificates)
  • Advanced Setup(?): Web and Email > SSL/TLS