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sec_error_unknown_issuer

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Sec_error_unknown_issuer for a certificate trusted by every other browser

Dear Forum mebers, I completely gave up this, so I hope somebody may have seen this issue and could resolve it :) We have an intranet corporate site, based on Windows Server 2012 R2 IIS server. I built up a single, WS2012R2 Standalone Root Certificat

Firefox error "sec_error_unknown_issuer"

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 recently began blocking my companies instance of SAP to launch another page. How can I bypass (Error code: sec_error_unknown_issuer)

This Connection is Untrusted You have asked Firefox to connect securely to xxxx.xx.xxx, but we can't confirm that your connection is secure. Normally, when you try to connect securely, sites will present trusted identification to prove that you are g

(Error code: sec_error_unknown_issuer) on all sites

I am getting the 'This Connection is Untrusted' page with this error message, (Error code: sec_error_unknown_issuer), on ALL of my regular websites when I go to log-in.For reference to anyone in the future who might have this problem - I am using Bit

This connection is untrusted with Error code: sec_error_unknown_issuer.

Hello, When I try to open G-Mail & twitter and some other trusted websites, I got the following warning "This Connection is Untrusted" with Error code: sec_error_unknown_issuer. For most of the site, I can bypass by clicking « I understand t

Error is "sec_error_unknown_issuer", regardless of deleting either cert8.db, or cert_override.txt, resetting FF, or anything, I can't ADD Exception, Works in IE

I get this from the server that runs the WatchGuard SPAM Filter, and I USED to be able to add an exception, and it was fine. Under "Technical Details" I get: "An error occurred during a connection to sp-servername.domain.local:4119. Peer's

HTTPS error - sec_error_unknown_issuer

From Firefox nightly trying access https://support.mozilla.org/questions/912835, I get the Connection is Untrusted message. Technical Details support.mozilla.org uses an invalid security certificate. The certificate is not trusted because the issuer

Why am I suddenly getting this message from a page I have been using for 6 months(Error code: sec_error_unknown_issuer) how do I get my page back?

Why am I suddenly getting this message from a page I have been using for 6 months(Error code: sec_error_unknown_issuer) how do I get my page back?Did you reset Firefox recently? *https://support.mozilla.org/kb/reset-firefox-easily-fix-most-problems I

Invalid security certificate for all websites on Mac (sec_error_unknown_issuer)

Since connecting to my university network, a message in Firefox systematically keeps popping up for every website. I'm now using internet somewhere else - where I've been connected many times before without a problem - and firefox keeps annoyingly gi

Error code: sec_error_unknown_issuer while opening Gmail and many other trusted websites!

I tried opening G-Mail and some other trusted website and Got "This Connection is Untrusted" with Error code: sec_error_unknown_issuer. There is no other button then "Get me out of here". Date/time are also set right. I am using Eset S

Firefox is complaining about a no. of secure websites (sec_error_unknown_issuer)...

I've recently re-built the computer. It's Windows 7 Home Premium and is fully upto date (as far as Windows update in concerned). On top of this a fresh installation of FireFox 5 has been installed. Since doing this (compared to pre re-build) FireFox

I try to go to Google and get Error code: sec_error_unknown_issuer

I try to bring up Google and get this message: This Connection is Untrusted You have asked Firefox to connect securely to www.google.com, but we can't confirm that your connection is secure. Normally, when you try to connect securely, sites will pres

Site name) uses an invalid security certificate. The certificate is not trusted because no issuer chain was provided. (Error code: sec_error_unknown_issuer)

I am working with Firefox 35.0 I get the security certificate error message of site name) uses an invalid security certificate. The certificate is not trusted because no issuer chain was provided. (Error code: sec_error_unknown_issuer). This happens

Getting error "The certificate is not trusted because no issuer chain was provided. (Error code: sec_error_unknown_issuer)"

I am using site "https://www.ultimatix.net" for learning purpose. This site directs to another site for web based learning, which is "icalmscontent.ultimatix.net". It is giving error "icalmscontent.ultimatix.net uses an invalid se

Firefox 8 not displaying addons, error code:sec_error_unknown_issuer

I receive the following error message when opening the addons tool bar... support.mozilla.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. (Error code: sec_error_unknown_issuer)Did yo

Getting sec_error_unknown_issuer while opening gmail. What to do?

While opening Gmail on firefox, I am not able to open it as I am getting Untrusted Connection with an error message "sec_error_unknown_issuer". There is no option to add exception also. What to do? I am able to open gmail on other websites .Open

Mobile beta doesn't provide a means to bypass sec_error_unknown_issuer

When accessing a website that would cause firefox to produce a sec_error_unknown_issuer error message, it is possible to view the certificate, accept it, and carry on anyway in the desktop version of firefox. In the mobile version, this option does n

New SSL certificate with 2048 bit shows error: (Fehlercode: sec_error_unknown_issuer)

installed a new SSL certificate with 2048 bit encryption (as is now required by issuer of certificate). Everything is OK with IE, FF shows error: (Fehlercode: sec_error_unknown_issuer) == URL of affected sites == https://www.dongil.at/I have also tri

On some sites we get sec_error_unknown_issuer SSL error due to missing root certificate TC TrustCenter Class 2 L1 CA XI. Firefox is the only browser having this issue. Why is that certificate not preinstalled and shipped with Firefox?

On some sites we get sec_error_unknown_issuer SSL error due to missing root certificate TC TrustCenter Class 2 L1 CA XI. Firefox is the only browser having this issue. Why is that certificate not preinstalled and shipped with Firefox? Check sales.sau

This connection is untrusted with (Error code: sec_error_unknown_issuer) received for one user on computer on various https connections, same sites accessible by other users

Windows 7. Firefox 9.0.1. Receiving above error on various sites which I have used succesfully before and which I can still use if I log on as a different user on this pc.Fixed by deleting cert8.db on profile directory.Read other 2 answers