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I can not access google.com and some other https sites but not all.

Yesterday I installed FF 43.0 - 64bit. I did as clean install as I could, uninstalled old version, and deleted from HDD every "mozilla" and "firefox" directory I could fi… (閱讀更多)

Yesterday I installed FF 43.0 - 64bit. I did as clean install as I could, uninstalled old version, and deleted from HDD every "mozilla" and "firefox" directory I could find. Since then, I am unable to access next sites (I believe list is not complete): https://www.google.com/ https://www.facebook.com/ https://www.google.com/maps https://www.google.rs/?gws_rd=ssl

Error msg is alwaays the same: "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 present trusted identification to prove that you are going to the right place. However, this site's identity can't be verified. What Should I Do? If you usually connect to this site without problems, this error could mean that someone is trying to impersonate the site, and you shouldn't continue. This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox only connect to it securely. As a result, it is not possible to add an exception for this certificate. Technical details: www.google.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)"

Sites that I can normaly access with this FF are: https://support.mozilla.org/en-US/ https://translate.google.com/ https://mail.google.com/

All other browsers can access all sites without problems.

DrStrangeloveSR 於 4 年前 詢問

cor-el 於 4 年前 解答

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This Connection is Untrusted (sec_error_unknown_issuer) Error on Windows 7 and nothing can fix it!

I have "This Connection Is Untrusted" error on my Firefox. I tried every single solution for it but nothing fixed it so far. Here is the error message: The certificate i… (閱讀更多)

I have "This Connection Is Untrusted" error on my Firefox. I tried every single solution for it but nothing fixed it so far.

Here is the error message:

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 work on Windows 7 Service Pack 1 Ultimate Edition. All the links and the solutions on your web page is for windows 8.1! But there is no family security pack in windows 7.

I uninstalled all security programs. I deleted cert.db file. I reinstalled firefox but it didn't help. When I change my date back to 2015, it works but this is make no sense!

I hope you have a solution for that. What can I do?

xenite 於 4 年前 詢問

FredMcD 於 4 年前 解答

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SSL_ERROR_INAPPROPRIATE_FALLBACK_ALERT on specific website

Hi there, I'm trying to troubleshoot an issue that seems to be specific to FireFox and a specific website. If you browse to www.denali.gov with FireFox, and then on the r… (閱讀更多)

Hi there,

I'm trying to troubleshoot an issue that seems to be specific to FireFox and a specific website.

If you browse to www.denali.gov with FireFox, and then on the right side of the page click on "Denali Commission Project Database", FireFox will first pop up a message that says: "Your connection is not secure"

Here is a direct link to the page: https://www.denali.gov/dcpdb/index.cfm?nossl=true&fuseAction=Indicators.ShowProjectMapLink

Then if you click on Advanced and click the "(Not secure) Try loading www.denali.gov using outdated security" that page will fail to load with the following error message:

"An error occurred during a connection to www.denali.gov. The server rejected the handshake because the client downgraded to a lower TLS version than the server supports. Error code: SSL_ERROR_INAPPROPRIATE_FALLBACK_ALERT"

Before anyone says "have you tried searching our forums or Google?", I've been researching this issue for the past hour and have not been able to come up with a solution. I checked the TSL settings on the "about:config" page and changed the version.min settings, but that does not fix the problem.

I have not been able to come up with anything, and so I turn to you guys... :-)


Has anyone seen this issue before and has a fix? The error is easily reproducible: Browse to the page using FireFox and I'm sure you'll see the same error.

However, the page loads fine in other browsers. Except, I don't want to use other browsers; I want to use FireFox.

Aschoonbeek 於 4 年前 詢問

jscher2000 於 4 年前 解答

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certificate issue

" The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root … (閱讀更多)

" 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)"


what do i do with this error ??

5mohsen5 於 4 年前 詢問

jscher2000 最近回覆 於 4 年前

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I keep getting an internet connection failure. Can someone help me repair this. It won't let me view certain pages.

This is what I keep getting on various sites lately: Secure Connection Failed An error occurred during a connection to hcde.centurylink.com. Peer using unsupported vers… (閱讀更多)

This is what I keep getting on various sites lately:

Secure Connection Failed

An error occurred during a connection to hcde.centurylink.com. Peer using unsupported version of security protocol. Error code: SSL_ERROR_UNSUPPORTED_VERSION

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

I have W7; DSL with Century Link who tried to fix it but couldn't. I can't seem to find the answer. I tried typing in about:config but got the Secure Connection Failed message. Grrrr! Help!

JT 於 4 年前 詢問

cor-el 於 4 年前 解答

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pfSense cert was trusted and now is not (nor can I manually do it)

So I've upgraded pfsense (which has my own self-signed cert for the GUI) to 2.3. For some reason, this has broken management for it via Firefox. It still works with Chrom… (閱讀更多)

So I've upgraded pfsense (which has my own self-signed cert for the GUI) to 2.3. For some reason, this has broken management for it via Firefox. It still works with Chrome.

Here is the error- The connection to 192.168.50.1:449 was interrupted while the page was loading.

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

What I have done to try to rectify this.... 1) Checked that both time of pfsense and my computer match (they do and Chrome works right with this anyway.) 2) Manually imported both the CA and cert. 3) Deleted cert8.db and let FF recreate it. 4) Tried a new profile (which works once and then fails as soon as FF is restarted.) 5) Tried on both Windows and Linux (neither side works.) 6) Generated a new cert for the GUI (which Chrome again just accepts but FF refuses.)

FF version is 45.0.1

I haven't seen anything else that addresses this. The key did not change in the upgrade. Even had it done that, I would think that by generating a new cert entirely should prompt for making a permanent exception again.

I've narrowed it down to FF as both Chrome and Vivaldi work perfectly on it. Nothing seems to have helped and the FF landing page doesn't reveal any useful info (as in SEC_ERROR_INSECURE_CIPHER or the like.)

Any help is very much appreciated as I hate opening Chrome solely to manage my firewall.

blueduckdock 於 4 年前 詢問

blueduckdock 於 4 年前 解答

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Can't Search in Firefox with Windows 10

I followed the instructions in "This Connection is Untrusted" error message appears - What to do and deleted cert8.db. I restarted Firefox but the problem persisted … (閱讀更多)

I followed the instructions in "This Connection is Untrusted" error message appears - What to do and deleted cert8.db. I restarted Firefox but the problem persisted

h_g 於 4 年前 詢問

jscher2000 於 4 年前 解答

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ERROR CODE: SEC_ERROR_OCSP_INVALID_SIGNING_CERT

Firefox does not allow me to open this site: https://www.mysubs.co.za/ . It gives the following error code :SEC_ERROR_OCSP_INVALID_SIGNING_CERT. This is the site that I … (閱讀更多)

Firefox does not allow me to open this site: https://www.mysubs.co.za/ . It gives the following error code :SEC_ERROR_OCSP_INVALID_SIGNING_CERT.

This is the site that I read my local newspaper on daily.

It is opening fine on other browsers like Chrome

greenleader 於 3 年前 詢問

cor-el 於 3 年前 解答

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Why is the mozilla.org site untrusted? "You have asked Firefox to connect securely to www.mozilla.org, but we can't confirm that your connection is secure."

Just downloaded firefox for mac and get their own server as a security warning.....not very promising. This Connection is Untrusted You have asked Firefox to connect secu… (閱讀更多)

Just downloaded firefox for mac and get their own server as a security warning.....not very promising.

This Connection is Untrusted

You have asked Firefox to connect securely to www.mozilla.org, 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 going to the right place. However, this site's identity can't be verified. What Should I Do?

If you usually connect to this site without problems, this error could mean that someone is trying to impersonate the site, and you shouldn't continue.

georgewachs 於 4 年前 詢問

jscher2000 於 4 年前 解答

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untrusted connection

Hi, I keep getting this untrusted connection message. I have tried posted solutions for the "this connection is untrusted" problem Firefox seems to be having. It occurs o… (閱讀更多)

Hi, I keep getting this untrusted connection message. I have tried posted solutions for the "this connection is untrusted" problem Firefox seems to be having. It occurs on any website I try to go into. I have tried changing date and time, running Norton antivirus scans (I have Norton 360 premier installed), change information using about:config setting, uninstalled and reinstalled Firefox and deleted "cert8.db" file, but nothing seems to work.

I tried adding images but can't attach them for some unknown reason. I am using internet explorer to send this message since Firefox not working. The error code I keep getting on every website, even on Firefox support websites are (Error code: sec_error_unknown_issuer) (Error code: sec_error_cert_signature_algorithm_disabled)

What do I do next?

Lthomas2 於 4 年前 詢問

Lthomas2 於 4 年前 解答

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This Connection Is Untrusted

Hi I have a client who has firefox installed on a windows 7 machine and it is getting blocked from attempting to access many reputable websites such as google mail etc. I… (閱讀更多)

Hi I have a client who has firefox installed on a windows 7 machine and it is getting blocked from attempting to access many reputable websites such as google mail etc. I have tried every potential fix there is and cannot get rid of this error from occuring. I reinstalled firefox, deleted the cert file, cleared the cache/history. I still get blocked when manually typing in websites with https in the address

For some reason I am not offered the "i understand the risk option" to bypass the error. All I see is the "Get me out of here" option

Let me know if there are any other potential fixes.

BigL 於 5 年前 詢問

BigL 於 5 年前 解答

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How to install firefox in windows 7 after getting "this publisher has been blocked" warning.

Here's the back story in case it helps... I upgraded windows 7 to windows 10, had many performance issues with windows 10 and reinstalled windows 7. After the reinstall… (閱讀更多)

Here's the back story in case it helps... I upgraded windows 7 to windows 10, had many performance issues with windows 10 and reinstalled windows 7. After the reinstall, I tried to download mozilla firefox again and install the browser. When I try to run the setup file for firefox I get a message that reads: "This publisher has been blocked from running software on your machine." The only option is to click "OK". There is no way to ignore the security warning and proceed with the install. I have had no trouble installing any other software (IE and Chrome included). I have tried starting windows in safe mode, but I still get the same warning. I do have administrator privileges while running the setup. I have found other forums addressing similar issues, but have not found a solution for my specific case yet. I have attached a screen capture of the security warning window so you can see there is no way to proceed. If I click the windows help link, it goes nowhere.

tomawesome39 於 4 年前 詢問

tomawesome39 於 4 年前 解答

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Certificate problem, can't fix by renaming the cert8.db

Hello, I have a problem with certificate of this web page : http://www.sps-jia.cz/moodle/ When I tried to log in, it said that "connection is untrusted", but that is norm… (閱讀更多)

Hello, I have a problem with certificate of this web page : http://www.sps-jia.cz/moodle/ When I tried to log in, it said that "connection is untrusted", but that is normal and i know it is secure. However, I'm incredibly dumb and accidentally have clicked on the button that added it as an untrusted connection. So immediately, I've started searching trough the Firefox setting, but I've discovered nothing that could help me. So I googled my problem, and most of the said that renaming/moving the cert8.db fire from the profile folder would help, but it didn't. The weirdest thing is that I can't access the website on other browsers (IE/Edge). I thing that it's somewhere in Windows. Plx halp Thanks

Haky00 於 4 年前 詢問

Haky00 於 4 年前 解答

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untrusted connection

Hello! I have run into an issue, for some reason Firefox is seeing Twitch.tv a common and popular Streaming website as a Mixed Content site and Not trusting it as a secur… (閱讀更多)

Hello! I have run into an issue, for some reason Firefox is seeing Twitch.tv a common and popular Streaming website as a Mixed Content site and Not trusting it as a secure connection therefor not allowing me to proceed and view the site. I was curious is there a way for me to access Twitch and other sites that may have the same issue? Sites such as Youtube work completely fine, I have included a print screen of the issue.

Thank you for your time! All Help and suggestions are appreciated! 

-Christian

Cmreasoner 於 4 年前 詢問

FredMcD 於 4 年前 解答

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Latest firefox will not let me access any search engine or https page

Windows 10 O/S on x64 Sony Viao laptop. Full AVG Anti-virus. The latest version of Firefox will not let me access any search engine, ALL (even Google) are untrusted. Clic… (閱讀更多)

Windows 10 O/S on x64 Sony Viao laptop. Full AVG Anti-virus. The latest version of Firefox will not let me access any search engine, ALL (even Google) are untrusted. Clicking onto a secure htpps tab also gives the same message and will not let me make an exception. I have been a regular user of Firefox and, until this, it has been my preferred browser. Advice please.

PeterMoyes 於 5 年前 詢問

PeterMoyes 於 5 年前 解答

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can't log into ATT email on yahoo.com. Firefox says HSTS won't allow certificate exception

when tying to log into my att email account, I get a message that the certificate for yahoo.com is not trusted and that the site uses HSTS and Firefox won't allow an exc… (閱讀更多)

when tying to log into my att email account, I get a message that the certificate for yahoo.com is not trusted and that the site uses HSTS and Firefox won't allow an exception. This started immediately after installing Kaspersky Internet Security 2016. I'm using another machine to access my email account.

ktravers 於 4 年前 詢問

FredMcD 於 4 年前 解答

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After clicking on a prompt to refresh Firefox, I lost my add-ons and many websites give me "This Connection is Untrusted" and won't load correctly.

I foolishly responded to a prompt on my screen suggesting there was a problem with Firefox. I clicked Refresh Firefox and seemed to be on a genuine page. After that I had… (閱讀更多)

I foolishly responded to a prompt on my screen suggesting there was a problem with Firefox. I clicked Refresh Firefox and seemed to be on a genuine page. After that I had lost my add-ons, like Ghostery. All attempts to access it failed as I either got an 'Untrusted Connection' message or simply a list of words from the website (in blue). Even the page for add-ons from the Firefox menu does not work. Then I discovered that other pages like Yahoo, gmail, and Wunderground gave the same problem. Firefox has become unusable. I uninstalled it and renewed it, to no avail.

digbythrust 於 4 年前 詢問

philipp 於 4 年前 解答

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What configuration needs to be changed to permit Secure Connections in Firefox 40.0.2?

Firefox Version: 40.0.2 labeled up to date; OS: Windows 7/64 bit (Home Premium); Banking site fails to connect to a secure site with a message "Secure Connection Required… (閱讀更多)

Firefox Version: 40.0.2 labeled up to date; OS: Windows 7/64 bit (Home Premium); Banking site fails to connect to a secure site with a message "Secure Connection Required"; Another site that uses simple htaccess to require password fails with "Authorization Required" message; Both of these sites open properly with Google Chrome;

I have been through the configuration options, and nothing seems to make any difference. Is there something that has changed in this new version that needs to be configured to make this work? I had not problems with this last week, presumably before and automatic 'upgrade'. Thanks, Steve

Steve_S 於 5 年前 詢問

FredMcD 於 5 年前 解答

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Your connection is not secure

Just made a new login on my iMac. Downloaded Firefox 46.0.1. Got "your network is not secure" on literally every page. Messed with some settings and was able to work (don… (閱讀更多)

Just made a new login on my iMac. Downloaded Firefox 46.0.1. Got "your network is not secure" on literally every page. Messed with some settings and was able to work (don't know which). Downloaded some add ons like HTTPS everywhere, uBlock Origin). Was working fine. Tried to get Pocket add on and everything crashed twice. Deleted Avast, didn't fix. Deleted and reinstalled Firefox, still nothing. I can't even access my add ons page.

BD0000 於 4 年前 詢問

FredMcD 最近回覆 於 4 年前