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this connection is untrusted with Error code: sec_error_unknown_issuer.

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Hello,

When I try to open G-Mail & twitter and some other trusted websites, I got the following warning "This Connection is Untrusted" with Error code: sec_error_unknown_issuer.

For most of the site, I can bypass by clicking « I understand the risk » but this is a bummer but for Gmail and Twitter, there is no other button than "Get me out of here"

When I go through « about:support » and « reinitialise » system, I no longer have the problem, but not only it erases all my personnal set-up but the problem always come back when I restart my system

Date and time are set right.

I have also tried to reinstall completely FIREFOX to no avail

I am using McAfee Total protection 2014 & Firefox 31.0 on Windows 7 64 bits.

I have had this problem for the last 5 days and only Firefox.

Other Browser ( IE8.0) is working fine

I have searched for solutions but they all failed -

Deleting cert8.db did not solve the problem either

How do I solve this Problem?

Thanks and Regards

Hello, When I try to open G-Mail & twitter and some other trusted websites, I got the following warning "This Connection is Untrusted" with Error code: sec_error_unknown_issuer. For most of the site, I can bypass by clicking « I understand the risk » but this is a bummer but for Gmail and Twitter, there is no other button than "Get me out of here" When I go through « about:support » and « reinitialise » system, I no longer have the problem, but not only it erases all my personnal set-up but the problem always come back when I restart my system Date and time are set right. I have also tried to reinstall completely FIREFOX to no avail I am using McAfee Total protection 2014 & Firefox 31.0 on Windows 7 64 bits. I have had this problem for the last 5 days and only Firefox. Other Browser ( IE8.0) is working fine I have searched for solutions but they all failed - Deleting cert8.db did not solve the problem either How do I solve this Problem? Thanks and Regards

Additional System Details

Installed Plug-ins

  • Next Generation Java Plug-in 10.67.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Adobe PDF Plug-In For Firefox and Netscape 11.0.8
  • Shockwave Flash 14.0 r0
  • Google Update
  • 5.1.30514.0
  • McAfee MSC FF plugin DLL
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealPlayer Download Plugin
  • iTunes Detector Plug-in
  • GEPlugin
  • Shockwave Flash 11.8 r800
  • RealNetworks(tm) RealDownloader Chrome Background Extension Plug-In
  • RealNetworks(tm) RealDownloader PepperFlashVideoShim Plug-In
  • RealNetworks(tm) RealDownloader HTML5VideoShim Plug-In
  • RealDownloader Plugin
  • Amazon MP3 Downloader Plugin 1.0.17
  • RealJukebox Netscape Plugin
  • RealNetworks(tm) RealPlayer Chrome Background Extension Plug-In
  • RealPlayer(tm) HTML5VideoShim Plug-In
  • Plugin for Wacom tablets.
  • Unity Player 3.5.2f2
  • DivX Plus Web Player version 2.2.0.52
  • Plug-in for detecting Nero Kwik Media.
  • DivX VOD Helper Plug-in
  • NVIDIA 3D Vision Streaming plugin for Mozilla browsers
  • NVIDIA 3D Vision plugin for Mozilla browsers
  • Yahoo! activeX Plug-in Bridge

Application

  • Firefox 32.0
  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0
  • Support URL: https://support.mozilla.org/1/firefox/32.0/WINNT/fr/

Extensions

  • Troubleshooter 1.1a (troubleshooter@mozilla.org)
  • McAfee Security Scan Plus 1.0 ({e4f94d1e-2f53-401e-8885-681602c0ddd8}) (Inactive)

Javascript

  • incrementalGCEnabled: True

Graphics

  • adapterDescription: NVIDIA GeForce GTS 450
  • adapterDescription2:
  • adapterDeviceID: 0x1245
  • adapterDeviceID2:
  • adapterDrivers: nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
  • adapterDrivers2:
  • adapterRAM: 1023
  • adapterRAM2:
  • adapterVendorID: 0x10de
  • adapterVendorID2:
  • direct2DEnabled: True
  • directWriteEnabled: True
  • directWriteVersion: 6.2.9200.16571
  • driverDate: 3-23-2011
  • driverDate2:
  • driverVersion: 8.17.12.6785
  • driverVersion2:
  • info: {u'AzureCanvasBackend': u'direct2d', u'AzureFallbackCanvasBackend': u'cairo', u'AzureContentBackend': u'direct2d', u'AzureSkiaAccelerated': 0}
  • isGPU2Active: False
  • numAcceleratedWindows: 1
  • numTotalWindows: 1
  • webglRenderer: Google Inc. -- ANGLE (NVIDIA GeForce GTS 450 Direct3D9Ex vs_3_0 ps_3_0)
  • windowLayerManagerRemote: False
  • windowLayerManagerType: Direct3D 10

Modified Preferences

  • browser.cache.disk.capacity: 358400
  • browser.cache.disk.smart_size.first_run: False
  • browser.cache.disk.smart_size.use_old_max: False
  • browser.cache.frecency_experiment: 3
  • browser.places.smartBookmarksVersion: 7
  • browser.search.update: False
  • browser.sessionstore.upgradeBackup.latestBuildID: 20140825202822
  • browser.startup.homepage: http://www.lexisnexis.fr/liens/depeches.html#top| https://www.fdj.fr/accueil/|www.amazon.fr|www.amazon.co.uk|http://www.tv.com|https://mail.google.com/mail/u/0/?shva=1#inbox|https://twitter.com/
  • browser.startup.homepage_override.buildID: 20140825202822
  • browser.startup.homepage_override.mstone: 32.0
  • dom.mozApps.used: True
  • extensions.lastAppVersion: 32.0
  • gfx.direct3d.last_used_feature_level_idx: 0
  • network.cookie.prefsMigrated: True
  • places.history.expiration.transient_current_max_pages: 104858
  • plugin.disable_full_page_plugin_for_types: application/pdf
  • plugin.importedState: True
  • privacy.sanitize.migrateFx3Prefs: True

Misc

  • User JS: No
  • Accessibility: No
philipp
  • Top 25 Contributor
  • Moderator
5324 solutions 23508 answers

hello, on a https site where the option is available, please attempt to add an exception on the bottom of the error page & inspect the certificate (see the screenshot attached for instructions):

  • which issuer information does the certificate contain?

thank you!

hello, on a https site where the option is available, please attempt to add an exception on the bottom of the error page & inspect the certificate (see the screenshot attached for instructions): * which '''issuer information''' does the certificate contain? thank you!
cor-el
  • Top 10 Contributor
  • Moderator
17578 solutions 159013 answers

You can check the connection settings.

If you do not need to use a proxy to connect to internet then try to select "No Proxy" if "Use the system proxy settings" or one of the others do not work properly.

See "Firefox connection settings":

Do a malware check with several malware scanning programs on the Windows computer. Please scan with all programs because each program detects different malware. All these programs have free versions.

Make sure that you update each program to get the latest version of their databases before doing a scan.

You can also do a check for a rootkit infection with TDSSKiller.

See also:

You can check the connection settings. *Tools > Options > Advanced > Network : Connection > Settings *https://support.mozilla.org/kb/Options+window+-+Advanced+panel If you do not need to use a proxy to connect to internet then try to select "No Proxy" if "Use the system proxy settings" or one of the others do not work properly. See "Firefox connection settings": *https://support.mozilla.org/kb/Firefox+cannot+load+websites+but+other+programs+can Do a malware check with several malware scanning programs on the Windows computer. Please scan with all programs because each program detects different malware. All these programs have free versions. Make sure that you update each program to get the latest version of their databases before doing a scan. *Malwarebytes' Anti-Malware:<br>http://www.malwarebytes.org/mbam.php *AdwCleaner:<br>http://www.bleepingcomputer.com/download/adwcleaner/<br>http://www.softpedia.com/get/Antivirus/Removal-Tools/AdwCleaner.shtml *SuperAntispyware:<br>http://www.superantispyware.com/ *Microsoft Safety Scanner:<br>http://www.microsoft.com/security/scanner/en-us/default.aspx *Windows Defender:<br>http://windows.microsoft.com/en-us/windows/using-defender *Spybot Search & Destroy:<br>http://www.safer-networking.org/en/index.html *Kasperky Free Security Scan:<br>http://www.kaspersky.com/security-scan You can also do a check for a rootkit infection with TDSSKiller. *Anti-rootkit utility TDSSKiller:<br>http://support.kaspersky.com/5350?el=88446 See also: *"Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked

Question owner

@philipp - First thanks for the reply. It doesn't only happen on https site but on all sites even mozilla support and all the ones I normaly go to. In clear it does it to every sites. Then, if the option is sometimes available, I do not want to spend my time adding an exception every frigging time. But thanks..

@philipp - First thanks for the reply. It doesn't only happen on https site but on all sites even mozilla support and all the ones I normaly go to. In clear it does it to every sites. Then, if the option is sometimes available, I do not want to spend my time adding an exception every frigging time. But thanks..

Question owner

@cor-el Thank you too for the reply I tried the proxy procedure you mentionned but it does not solve my problem I have already tried various virus scan and malwarebytes. My system is clean

I have a feeling that it must be somehow in conflict with Mcafee, do not know why, but my gutts tell me they both must try to do the same thing and do not know which is which.. hence this stupid block

On my search on the Internet, I have seen someone talking about SSL or Sll conflict, but did not understand what must be done. Any idea ?

@cor-el Thank you too for the reply I tried the proxy procedure you mentionned but it does not solve my problem I have already tried various virus scan and malwarebytes. My system is clean I have a feeling that it must be somehow in conflict with Mcafee, do not know why, but my gutts tell me they both must try to do the same thing and do not know which is which.. hence this stupid block On my search on the Internet, I have seen someone talking about SSL or Sll conflict, but did not understand what must be done. Any idea ?
philipp
  • Top 25 Contributor
  • Moderator
5324 solutions 23508 answers

@NMH1, you should not add exceptions to all sites! this is only a one time trouble-shooting procedure, try it once with the procedure explained above and report back with the issuer information, since this might provide a clue what is at the root of the problem.

@NMH1, you should not add exceptions to all sites! this is only a one time trouble-shooting procedure, try it once with the procedure explained above and report back with the '''issuer information''', since this might provide a clue what is at the root of the problem.

Question owner

@philipp,

so it says  : Nom commun (CN) VeriSign Class 3 Public Primary Certification Authority - G5 Organisation (O) VeriSign, Inc. Unité d’organisation (OU) VeriSign Trust Network

@philipp, so it says : Nom commun (CN) VeriSign Class 3 Public Primary Certification Authority - G5 Organisation (O) VeriSign, Inc. Unité d’organisation (OU) VeriSign Trust Network
philipp
  • Top 25 Contributor
  • Moderator
5324 solutions 23508 answers

ok, this looks genuine. does this also happen as well you launch firefox in safe mode like described at Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems?

ok, this looks genuine. does this also happen as well you launch firefox in safe mode like described at [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]]?

Question owner

@Philipp, yes it does. Also when I reset Firefox it erases all add-ons, so add-ons cannot be the problem in this instance. I am presently running a a brand new reinstalled-from-scratch-firefox, with no preferences, no add ons and it still does it. Does not occur on Internet Explorer which I am presently using as Firefox would not let me on this forum even if I add an exception.

@Philipp, yes it does. Also when I reset Firefox it erases all add-ons, so add-ons cannot be the problem in this instance. I am presently running a a brand new reinstalled-from-scratch-firefox, with no preferences, no add ons and it still does it. Does not occur on Internet Explorer which I am presently using as Firefox would not let me on this forum even if I add an exception.

Modified by NMH1

philipp
  • Top 25 Contributor
  • Moderator
5324 solutions 23508 answers

this is very strange - does it also happen as well when you try a portable version of firefox on your machine?: http://portableapps.com/apps/internet/firefox_portable

this is very strange - does it also happen as well when you try a portable version of firefox on your machine?: http://portableapps.com/apps/internet/firefox_portable

Question owner

@Philipp, did not try this yet, I will try tomorrow (it is night time here) and will let you know Thanks anyway

@Philipp, did not try this yet, I will try tomorrow (it is night time here) and will let you know Thanks anyway

Question owner

@Philipp, just tried the portable version. Same problem ...

@Philipp, just tried the portable version. Same problem ...
philipp
  • Top 25 Contributor
  • Moderator
5324 solutions 23508 answers

can you run the hijackthis tool from http://sourceforge.net/projects/hjt/ and provide a log either in a forum reply (or if it doesn't fit, paste it into http://pastebin.mozilla.org/and provide a link to that)?

can you run the hijackthis tool from http://sourceforge.net/projects/hjt/ and provide a log either in a forum reply (or if it doesn't fit, paste it into http://pastebin.mozilla.org/and provide a link to that)?

Question owner

"For some reason your system denied write access to the Hosts file. If any hijaced domains are in this file, HijactThis may NOT be able to fix this. If that happens, you need to edit the file yourself..." then it tells me how to do it and to delete the lines HijackThis reports ... but there are not any ....

"For some reason your system denied write access to the Hosts file. If any hijaced domains are in this file, HijactThis may NOT be able to fix this. If that happens, you need to edit the file yourself..." then it tells me how to do it and to delete the lines HijackThis reports ... but there are not any ....
philipp
  • Top 25 Contributor
  • Moderator
5324 solutions 23508 answers

this notice is appearing when you don't run the toll with admin rights. please try to right-click it and select "run as administrator" to get the full log...

this notice is appearing when you don't run the toll with admin rights. please try to right-click it and select "run as administrator" to get the full log...

Question owner

Right, but when I closed the pop-up window, it all came up, but would not let me paste it here, so there it is :

http://pastebin.mozilla.org/6389415

Right, but when I closed the pop-up window, it all came up, but would not let me paste it here, so there it is : http://pastebin.mozilla.org/6389415
philipp
  • Top 25 Contributor
  • Moderator
5324 solutions 23508 answers

on first sight this looks all fairly common. this is starting to remind me of a problem we had a little while back which turned out to be something isp related: https://support.mozilla.org/en-US/questions/976504

one test you could still run is to see if the issue is occurring when you boot windows in safe mode with networking enabled: http://windows.microsoft.com/en-us/windows/start-computer-safe-mode#start-computer-safe-mode=windows-7

on first sight this looks all fairly common. this is starting to remind me of a problem we had a little while back which turned out to be something isp related: https://support.mozilla.org/en-US/questions/976504 one test you could still run is to see if the issue is occurring when you boot windows in safe mode with networking enabled: http://windows.microsoft.com/en-us/windows/start-computer-safe-mode#start-computer-safe-mode=windows-7

Question owner

Hi Philipp, I do not think it is isp related since, but correct me if I am wrong, it would do it to when I reset Firefox. I have one more time uninstall and erase firefox from the registry I will reinstall and see what is happening. I'll keep you posted

Hi Philipp, I do not think it is isp related since, but correct me if I am wrong, it would do it to when I reset Firefox. I have one more time uninstall and erase firefox from the registry I will reinstall and see what is happening. I'll keep you posted
cor-el
  • Top 10 Contributor
  • Moderator
17578 solutions 159013 answers

Try to 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.

If that didn't help then remove or rename secmod.db (secmod.db.old) as well.

You can use this button to go to the currently used Firefox profile folder:

  • Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)
Try to 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. If that didn't help then remove or rename secmod.db (secmod.db.old) as well. You can use this button to go to the currently used Firefox profile folder: *Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)

Question owner

Hi cor-el, I tried before deleting cert8.db to no avail, however did not try renaming it. I will try this, once I have reinstall firefox should I have the same problem. Will do this tomorrow though, (it's night time here)

Hi cor-el, I tried before deleting cert8.db to no avail, however did not try renaming it. I will try this, once I have reinstall firefox should I have the same problem. Will do this tomorrow though, (it's night time here)

Question owner

I found this : http://kbeezie.com/untrusted-connection-firefox/ Is this safe to do? and if so, could it fix the problem? If so, where do I find my certificate (should I have one even if I do not have my own domain)

I found this : http://kbeezie.com/untrusted-connection-firefox/ Is this safe to do? and if so, could it fix the problem? If so, where do I find my certificate (should I have one even if I do not have my own domain)

Modified by NMH1