This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

Every site is untrusted since Updating to v28

  • 5 valiny
  • 4 manana an'ity olana ity
  • 9 views
  • Valiny farany nomen'i Jantosh

Jantosh
Jantosh
more options

I try to go to sites I went to yesterday and I am blocked today. They all say that this connection is untrusted. Here is what is an example under technical data "www.outlook.com uses an invalid security certificate. The certificate is not trusted because no issuer chain was provided. (Error code: sec_error_unknown_issuer)" I'm run Win7 Pro with Microsoft Essentials. The time is correct and I do not have any web security. Windows firewall allows Firefox.

I try to go to sites I went to yesterday and I am blocked today. They all say that this connection is untrusted. Here is what is an example under technical data "www.outlook.com uses an invalid security certificate. The certificate is not trusted because no issuer chain was provided. (Error code: sec_error_unknown_issuer)" I'm run Win7 Pro with Microsoft Essentials. The time is correct and I do not have any web security. Windows firewall allows Firefox.

Vahaolana nofidina

I did the uninstall. Finally ran spybot search and destroy. Found out I have a PUP virus. It was all located in my Temp files. Cleaned it up and I'm running again. thanks for the help.

Hamaky an'ity valiny ity @ sehatra 👍 0

All Replies (5)

Diego Victor
Diego Victor
more options

Hello,

See:

Also:

Jantosh
Jantosh Tompon'ny fanontaniana
more options

I tried deleting cert8.db earlier and it mode no difference.

Jantosh
Jantosh Tompon'ny fanontaniana
more options

I tried safe mode and I reset Firefox. It even says that the help page is untrusted.

Diego Victor
Diego Victor
more options

Certain Firefox problems can be solved by performing a Clean reinstall. This means you remove Firefox program files and then reinstall Firefox. Please follow these steps:

Note: You might want to print these steps or view them in another browser.

  1. Download the latest Desktop version of Firefox from http://www.mozilla.org and save the setup file to your computer.
  2. After the download finishes, close all Firefox windows (click Exit from the Firefox or File menu).
  3. Delete the Firefox installation folder, which is located in one of these locations, by default:
    • Windows:
      • C:\Program Files\Mozilla Firefox
      • C:\Program Files (x86)\Mozilla Firefox
    • Mac: Delete Firefox from the Applications folder.
    • Linux: If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see Install Firefox on Linux. If you downloaded and installed the binary package from the Firefox download page, simply remove the folder firefox in your home directory.
  4. Now, go ahead and reinstall Firefox:
    1. Double-click the downloaded installation file and go through the steps of the installation wizard.
    2. Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.

More information about reinstalling Firefox can be found here.

WARNING: Do not run Firefox's uninstaller or use a third party remover as part of this process, because that could permanently delete your Firefox data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. These cannot be recovered unless they have been backed up to an external device!

Please report back to see if this helped you!

Thank you.

Jantosh
Jantosh Tompon'ny fanontaniana
more options

Vahaolana Nofidina

I did the uninstall. Finally ran spybot search and destroy. Found out I have a PUP virus. It was all located in my Temp files. Cleaned it up and I'm running again. thanks for the help.