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Unable to access Google with Firefox

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f117-nighthawk Posted messages 150 Status Member -  
f117-nighthawk Posted messages 150 Status Member -

Hello,

I'm reaching out because for the past two days I haven't been able to access Google or perform searches using Mozilla Firefox (version 113.0, so it's up to date). When I try to perform a search or connect to Google, I receive an error message of type SEC_ERROR_UNKNOWN_ISSUER.

I checked the Mozilla site for information, and the only things I found were: uninstall third-party antivirus software (except that I don't have any; I use the built-in Windows Defender) and check for malware and viruses. I ran Malwarebytes and AdwCleaner scans, but without success (no malware)...

I also tried a Windows repair, but that didn't yield any results...

I'm on Windows 10 64-bit and I'm connected via Wi-Fi to my router.

The most surprising thing is that Google Chrome and Microsoft Edge are not giving me any issues.

So I was wondering if there was anything else I could do?

Thank you in advance for your help.

3 answers

  1.
    brucine Posted messages 25193 Registration date   Status Member Last intervention   4 172
     

    Hello,

    This is a security certificate issue, which shouldn't occur only on a site whose certificates cannot be called into question (for example, Google).

    It is therefore indeed a connection problem caused by the remnants of third-party security software or, more broadly speaking, anything that may affect the Hosts file or a Proxy.

    Edit the Hosts file at C:\Windows\System32\drivers\etc with Notepad looking for unwanted entries and go to Firefox under Tools - Options - Network Settings - Settings: set to "No Proxy."

    If that doesn't suffice, go to the Burger menu in the top right, Help, Troubleshoot Mode, and Repair Firefox. If that still doesn't work, uninstall and reinstall (after backing up your profile to recover bookmarks, credentials, and such), if that still doesn't work, then there is a malware issue.

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  2. f117-nighthawk Posted messages 150 Status Member 11
     

    Thank you both for your responses. So I was able to resolve the issues in Firefox's network settings: for some reason that I don't know, it had decided to use the system's proxy settings. But that's fixed. Thank you very much!

    1
  3. Redbart Posted messages 20954 Registration date   Status Member Last intervention   3 383
     

    Hello

    there are tools in - help - more troubleshooting information

    0