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How to disable "This connection is untrusted" ?

Posted

I just installed a fresh windows xp on my pc and I'm using the latest FF 26.0,but from the start i cant get to some pages,like in youtube,some pages doesnt come up and i get the "This connection is untrusted" page,in the technical details it says "youtube.com uses an invalid security certificate,the certificate is not trusted because no issuer chain is provided.(Error code:sec_error_unknown_issuer). also when i open FF add-ons manager tab Extensions,Appearance,Plugins and Services are ok but the Get Add-ons tab is not working,i get the same page as i stated above with the same technical details (instead of youtube.com it's services.addons.mozilla.org) and same error. I've tried all solutions on the web and on this forum like reset FF, adjust time & date, using the "Skip cert error" add-on, deleting the cert8.db file, and so on - none of them helped me with this problem. If it helps i use Avast! antivirus and window firewall,no other software on that pc. I'm pretty clueless about what else i can do,any suggestion that might help? Thanks!

I just installed a fresh windows xp on my pc and I'm using the latest FF 26.0,but from the start i cant get to some pages,like in youtube,some pages doesnt come up and i get the "This connection is untrusted" page,in the technical details it says "youtube.com uses an invalid security certificate,the certificate is not trusted because no issuer chain is provided.(Error code:sec_error_unknown_issuer). also when i open FF add-ons manager tab Extensions,Appearance,Plugins and Services are ok but the Get Add-ons tab is not working,i get the same page as i stated above with the same technical details (instead of youtube.com it's services.addons.mozilla.org) and same error. I've tried all solutions on the web and on this forum like reset FF, adjust time & date, using the "Skip cert error" add-on, deleting the cert8.db file, and so on - none of them helped me with this problem. If it helps i use Avast! antivirus and window firewall,no other software on that pc. I'm pretty clueless about what else i can do,any suggestion that might help? Thanks!

Chosen solution

Check the date and time in the clock on your computer: (double) click the clock icon on the Windows Taskbar.


You can retrieve the certificate and check details like who issued certificates and expiration dates of certificates.

  • Click the link at the bottom of the error page: "I Understand the Risks"

Let Firefox retrieve the certificate: "Add Exception" -> "Get Certificate".

  • Click the "View..." button and inspect the certificate and check who is the issuer of the certificate.

You can see more Details like intermediate certificates that are used in the Details pane.

If "I Understand the Risks" is missing then this page may be opened in an (i)frame and in that case try the right-click context menu and use "This Frame: Open Frame in New Tab".

Note that some firewalls monitor (secure) connections and that programs like Sendori or Fiddler (FiddlerRoot) can intercept connections and send their own certificate instead of the website's certificate.

Read this answer in context 7

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.9 r900
  • VLC media player Web Plugin 2.1.0
  • Next Generation Java Plug-in 10.45.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • 5.1.20913.0
  • LogMeIn, Inc. Remote Access Components
  • Foxit Reader Plug-In For Firefox and Netscape
  • Adobe Shockwave for Director Netscape plug-in, version 11.6.3.633
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
  • DRM Netscape Network Object
  • Npdsplay dll
  • DRM Store Netscape Plugin

Application

  • User Agent: Mozilla/5.0 (Windows NT 5.1; rv:26.0) Gecko/20100101 Firefox/26.0

More Information

cor-el
  • Top 10 Contributor
  • Moderator
12905 solutions 118370 answers

Chosen Solution

Check the date and time in the clock on your computer: (double) click the clock icon on the Windows Taskbar.


You can retrieve the certificate and check details like who issued certificates and expiration dates of certificates.

  • Click the link at the bottom of the error page: "I Understand the Risks"

Let Firefox retrieve the certificate: "Add Exception" -> "Get Certificate".

  • Click the "View..." button and inspect the certificate and check who is the issuer of the certificate.

You can see more Details like intermediate certificates that are used in the Details pane.

If "I Understand the Risks" is missing then this page may be opened in an (i)frame and in that case try the right-click context menu and use "This Frame: Open Frame in New Tab".

Note that some firewalls monitor (secure) connections and that programs like Sendori or Fiddler (FiddlerRoot) can intercept connections and send their own certificate instead of the website's certificate.

Check the date and time in the clock on your computer: (double) click the clock icon on the Windows Taskbar. *https://support.mozilla.org/kb/Secure+Connection+Failed ---- You can retrieve the certificate and check details like who issued certificates and expiration dates of certificates. *Click the link at the bottom of the error page: "I Understand the Risks" Let Firefox retrieve the certificate: "Add Exception" -> "Get Certificate". *Click the "View..." button and inspect the certificate and check who is the issuer of the certificate. You can see more Details like intermediate certificates that are used in the Details pane. If "I Understand the Risks" is missing then this page may be opened in an (i)frame and in that case try the right-click context menu and use "This Frame: Open Frame in New Tab". Note that some firewalls monitor (secure) connections and that programs like Sendori or Fiddler (FiddlerRoot) can intercept connections and send their own certificate instead of the website's certificate.

Question owner

Hi cor-rel thanks for the quick reply,in the link u provided there are a few ways to solve this problem but all of which are not working for me...i even stopped the ssl scanning in avast but no change,still get that page. i opened the "view" tab to who is the issuer and its : netspark.com in the details tab i see the Validity is not before 31-dec-12 0:00:00 and not after 31-dec-16 23:59:59. I figure it has something to do with my internet provider (?) now that i have accepted this cert. for the add ons i can finally choose add ons but i cant install them,i have a n error saying : "There was an error downloading Adblock Plus" any thoughts on next step?

Hi cor-rel thanks for the quick reply,in the link u provided there are a few ways to solve this problem but all of which are not working for me...i even stopped the ssl scanning in avast but no change,still get that page. i opened the "view" tab to who is the issuer and its : netspark.com in the details tab i see the Validity is not before 31-dec-12 0:00:00 and not after 31-dec-16 23:59:59. I figure it has something to do with my internet provider (?) now that i have accepted this cert. for the add ons i can finally choose add ons but i cant install them,i have a n error saying : "There was an error downloading Adblock Plus" any thoughts on next step?
cor-el
  • Top 10 Contributor
  • Moderator
12905 solutions 118370 answers

Note that is is best not to create a permanent exception in cases like this if that is what you did when it just should be working.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe Mode start window.

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test to see if that helps.

Note that is is best not to create a permanent exception in cases like this if that is what you did when it just should be working. Start Firefox in <u>[[Safe Mode|Safe Mode]]</u> to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance). *Do NOT click the Reset button on the Safe Mode start window. *https://support.mozilla.org/kb/Safe+Mode *https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test to see if that helps.

Helpful Reply

Finally solved the problem... when I found out with your help cor-er, that the issuer of the certificate is netscape i figured it has something to do with my internet provider, since im using special provider that blocks "adult" sites and other harmfull sites,i needed to add a certein certificated from my provider's web site,after doing so all problems were gone immidiatly. Thank you so much for the quick respond and all the help!

Finally solved the problem... when I found out with your help cor-er, that the issuer of the certificate is netscape i figured it has something to do with my internet provider, since im using special provider that blocks "adult" sites and other harmfull sites,i needed to add a certein certificated from my provider's web site,after doing so all problems were gone immidiatly. Thank you so much for the quick respond and all the help!