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Firefox error "sec_error_unknown_issuer"

Skrevet

After years and years of using Firefox, I decided to leave it and start using Google Chrome. Why ? Because Firefox returns error "sec_error_unknown_issuer" very often, when I access to my usual websites. Something must have been wrong with last Firefox update. Getting these SSL errors on every other site is starting to really get annoying! There is nothing wrong with the SSL certificates or the sites. It's your browser that is unable to verify the certificates.

When you fix it, maybe (only maybe) shall I return to Firefox.

Have a good day.

After years and years of using Firefox, I decided to leave it and start using Google Chrome. Why ? Because Firefox returns error "sec_error_unknown_issuer" very often, when I access to my usual websites. Something must have been wrong with last Firefox update. Getting these SSL errors on every other site is starting to really get annoying! There is nothing wrong with the SSL certificates or the sites. It's your browser that is unable to verify the certificates. When you fix it, maybe (only maybe) shall I return to Firefox. Have a good day.

Yderligere systemdetaljer

Installerede plugins

  • 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
  • VLC media player Web Plugin 2.1.3
  • Shockwave Flash 14.0 r0
  • Google Update
  • 5.1.30514.0
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • McAfee MSC FF plugin DLL
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealPlayer Download Plugin
  • GEPlugin
  • RealNetworks(tm) RealDownloader Chrome Background Extension Plug-In
  • RealNetworks(tm) RealDownloader PepperFlashVideoShim Plug-In
  • RealNetworks(tm) RealDownloader HTML5VideoShim Plug-In
  • RealDownloader Plugin
  • Adobe Shockwave for Director Netscape plug-in, version 12.0.3.133
  • McAfee Virtual Technician plugin for Mozilla (Gecko Version: 1.8b1)
  • NPWLPG
  • Office Live Update v1.5
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers

Program

  • Firefox 31.0
  • User Agent: Mozilla/5.0 (Windows NT 6.1; rv:31.0) Gecko/20100101 Firefox/31.0
  • Support-URL: https://support.mozilla.org/1/firefox/31.0/WINNT/ca/

Udvidelser

  • Troubleshooter 1.1a (troubleshooter@mozilla.org)
  • McAfee Security Scan Plus 1.0 ({e4f94d1e-2f53-401e-8885-681602c0ddd8}) (Inactive)
  • McAfee SiteAdvisor 3.7.1 ({4ED1F68A-5463-4931-9384-8FFF5ED91D92}) (Inactive)
  • Microsoft .NET Framework Assistant 0.0.0 ({20a82645-c095-46ed-80e3-08825760534b}) (Inactive)

Javascript

  • incrementalGCEnabled: True

Grafik

  • adapterDescription: NVIDIA GeForce Go 7900 GS
  • adapterDescription2:
  • adapterDeviceID: 0x0298
  • adapterDeviceID2:
  • adapterDrivers: nvd3dum nvwgf2um
  • adapterDrivers2:
  • adapterRAM: 256
  • adapterRAM2:
  • adapterVendorID: 0x10de
  • adapterVendorID2:
  • direct2DEnabled: False
  • direct2DEnabledMessage: [u'tryNewerDriver', u'257.21']
  • directWriteEnabled: False
  • directWriteVersion: 6.2.9200.16571
  • driverDate: 1-30-2009
  • driverDate2:
  • driverVersion: 7.15.11.7948
  • driverVersion2:
  • info: {u'AzureCanvasBackend': u'skia', u'AzureFallbackCanvasBackend': u'cairo', u'AzureContentBackend': u'cairo', u'AzureSkiaAccelerated': 0}
  • isGPU2Active: False
  • numAcceleratedWindows: 0
  • numAcceleratedWindowsMessage: [u'tryNewerDriver', u'182.65']
  • numTotalWindows: 1
  • webglRendererMessage: [u'tryNewerDriver', u'182.65']
  • windowLayerManagerRemote: False
  • windowLayerManagerType: Basic

Ændrede indstillinger

  • accessibility.typeaheadfind.flashBar: 0
  • browser.cache.disk.capacity: 358400
  • browser.cache.disk.smart_size.first_run: False
  • browser.cache.disk.smart_size.use_old_max: False
  • browser.cache.disk.smart_size_cached_value: 358400
  • browser.cache.frecency_experiment: 3
  • browser.places.smartBookmarksVersion: 7
  • browser.privatebrowsing.autostart: True
  • browser.sessionstore.upgradeBackup.latestBuildID: 20140716183446
  • browser.startup.homepage: http://www.google.es/
  • browser.startup.homepage_override.buildID: 20140716183446
  • browser.startup.homepage_override.mstone: 31.0
  • browser.urlbar.default.behavior: 2
  • dom.mozApps.used: True
  • extensions.lastAppVersion: 31.0
  • network.cookie.prefsMigrated: True
  • places.database.lastMaintenance: 1408120323
  • places.history.expiration.transient_current_max_pages: 87201
  • plugin.disable_full_page_plugin_for_types: application/pdf
  • plugin.importedState: True
  • privacy.sanitize.migrateFx3Prefs: True
  • security.disable_button.openCertManager: False
  • storage.vacuum.last.index: 1
  • storage.vacuum.last.places.sqlite: 1407150151

Diverse

  • User JS: Nej
  • Tilgængelighed: Nej
Luk
philipp
  • Top 25 Contributor
  • Moderator
5330 løsninger 23532 svar

hello, this is most probably caused by external factors and a possible solution depends on different factors. 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!

"This Connection is Untrusted" error message appears - What to do

hello, this is most probably caused by external factors and a possible solution depends on different factors. please attempt to add an exception on the bottom of the error page & inspect the certificate (see the screenshot attached for instructions): <br>which '''issuer information''' does the certificate contain? thank you! [["This Connection is Untrusted" error message appears - What to do]]
ann-mari 0 løsninger 8 svar

I did have this problem and I did remove Rocket Tab and the problem was solved!

Did try the removal of cert8.db. first a few times but it didn't work .

I did have this problem and I did remove Rocket Tab and the problem was solved! Did try the removal of cert8.db. first a few times but it didn't work .