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Connection not secure - search engines over VPN, works with Chrome

Posted

When I work from home and I connect to my client's network via Crosslink VPN, Firefox shows the "Connection not secure" warning page with "Error code: SEC_ERROR_UNKNOWN_ISSUER" for

https://duckduckgo.com/?q=firefox+insecure+connection+warning&t=ffab

and

https://www.google.co.uk/

which is making my life quite difficult! Chrome works but I haven't got Chrome customised to my liking or with my passwords etc.

I don't really know what it's doing but I suspect some certificate has gone missing over the VPN link. Is there a fix?

Thanks Adam

When I work from home and I connect to my client's network via Crosslink VPN, Firefox shows the "Connection not secure" warning page with "Error code: SEC_ERROR_UNKNOWN_ISSUER" for https://duckduckgo.com/?q=firefox+insecure+connection+warning&t=ffab and https://www.google.co.uk/ which is making my life quite difficult! Chrome works but I haven't got Chrome customised to my liking or with my passwords etc. I don't really know what it's doing but I suspect some certificate has gone missing over the VPN link. Is there a fix? Thanks Adam

Additional System Details

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0

More Information

FredMcD
  • Top 10 Contributor
4248 solutions 59427 answers
There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connection certificates and send their own. https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can https://support.mozilla.org/en-US/kb/firefox-and-other-browsers-cant-load-websites https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message https://support.mozilla.org/en-US/kb/connection-untrusted-error-message [https://support.mozilla.org/en-US/kb/websites-dont-load-troubleshoot-and-fix-errors?redirectlocale=en-US&redirectslug=Error+loading+web+sites Websites don't load - troubleshoot and fix error messages] http://kb.mozillazine.org/Error_loading_websites

Question owner

My laptop does have Windows 10 Defender virus scanning set up and running, but it always has that and normally without the VPN connected, it's fine.

I think it's unlikely that making the Crosslink VPN connection switches on or alters the virus software, surely. I had a good look just now through its configuration and it does make checks for all sorts of configuration, scripts and processes before it connects - including the virus scanner - but I don't believe it changes the virus scanner configuration.

There is the option to run applications with tunnelling, but firefox was very unhappy being run like that, and wouldn't make any connections at all.

My laptop does have Windows 10 Defender virus scanning set up and running, but it always has that and normally without the VPN connected, it's fine. I think it's unlikely that making the Crosslink VPN connection switches on or alters the virus software, surely. I had a good look just now through its configuration and it does make checks for all sorts of configuration, scripts and processes before it connects - including the virus scanner - but I don't believe it changes the virus scanner configuration. There is the option to run applications with tunnelling, but firefox was very unhappy being run like that, and wouldn't make any connections at all.

Question owner

Is there nothing I can do? :(

Is there nothing I can do? :(
FredMcD
  • Top 10 Contributor
4248 solutions 59427 answers

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

[https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Start Firefox in Safe Mode] {web link} by holding down the '''<Shift> ''(Mac=Options)''''' key, and then starting Firefox. A small dialog should appear. Click '''Start In Safe Mode''' (not Refresh). Is the problem still there?

Question owner

No, the problem still persists.

No, the problem still persists.
FredMcD
  • Top 10 Contributor
4248 solutions 59427 answers

I called for more help.

I called for more help.

Question owner

I'm working from home again and using the Crosslink VPN. I'm forced to abandon Firefox and use Chrome because of this certificates issue, but there are also other symptoms, in case it helps solve the problem:

- closing Crosslink does not help, the issue remains and I guess I'll need to reboot

- Firefox has slowed down noticeably

- the amount of ads I'm seeing while surfing the web with Chrome (and without No Script and uBlock) is aggravating my OCD - pass me that axe Eugene....

I'm working from home again and using the Crosslink VPN. I'm forced to abandon Firefox and use Chrome because of this certificates issue, but there are also other symptoms, in case it helps solve the problem: - closing Crosslink does not help, the issue remains and I guess I'll need to reboot - Firefox has slowed down noticeably - the amount of ads I'm seeing while surfing the web with Chrome (and without No Script and uBlock) is aggravating my OCD - pass me that axe Eugene....

Question owner

Help!

Arrrrrgghhhh

blub blub blub

Help! Arrrrrgghhhh blub blub blub
Tyler Downer
  • Top 25 Contributor
  • Moderator
1530 solutions 10672 answers

If you view the certificate for DuckDuckGo, who is the issuer?

If you view the certificate for DuckDuckGo, who is the issuer?

Question owner

I can't view it. It says:

duckduckgo.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root certificate may need to be imported. Error code: SEC_ERROR_UNKNOWN_ISSUER

I can't view it. It says: duckduckgo.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root certificate may need to be imported. Error code: SEC_ERROR_UNKNOWN_ISSUER
Tyler Downer
  • Top 25 Contributor
  • Moderator
1530 solutions 10672 answers

If you click "Learn More" are you able to view the certificate?

If you click "Learn More" are you able to view the certificate?

Question owner

no, that's a link to a help page in the knowledge base

no, that's a link to a help page in the knowledge base

Question owner

but I can get to the page information dialog box via the address bar info icon, and that shows that the certificate appears to be empty - clicking on the 'view certificate' button has no effect :(

but I can get to the page information dialog box via the address bar info icon, and that shows that the certificate appears to be empty - clicking on the 'view certificate' button has no effect :(

Question owner

I am still suffering! HELP!!! Somebody tell me what I have to do to get Firefox to work!

PPPPPLLLLLLEEEEEEEAAAAAAASSSSSSSEEEEEEEEEEEEEEEE!!!!!!!!

I am still suffering! HELP!!! Somebody tell me what I have to do to get Firefox to work! PPPPPLLLLLLEEEEEEEAAAAAAASSSSSSSEEEEEEEEEEEEEEEE!!!!!!!!

Question owner

This issue is a Firefox issue! Please don't ignore it. I need a solution to be able to use FF. IE works. Chrome works. It must be a FF issue - where do you raise bugs for FF? Is there a bug tracker?

This issue is a Firefox issue! Please don't ignore it. I need a solution to be able to use FF. IE works. Chrome works. It must be a FF issue - where do you raise bugs for FF? Is there a bug tracker?