Ceisteanna leis an gclib seo á dtaispeáint: Taispeáin gach ceist
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Lately Firefox will not allow me to visit my favorite sites. Either I am shown that there are certificate errors or I am shown that it doesn't exist.

I can no longer visit local town sites where I read news, and I can't view most sites where I read about science or weather. In example, this site will not load on Firefo… (tuilleadh eolais)

I can no longer visit local town sites where I read news, and I can't view most sites where I read about science or weather. In example, this site will not load on Firefox claiming it does not exist but I can see it on Explorer: augmentinforce.50webs.com

Whatever is happening is a change that just bam occurred. I am sick of it.

Asked by TheSageCottage 2 bhliain ó shin

Answered by FredMcD 2 bhliain ó shin

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Firefox no longer trusts my internal certificate authority used for internal sites on our domain.

The error: SEC_ERROR_UNKNOWN_ISSUER. The certificates use sha256 for their signature algorithm. Chrome and Edge both see the certificates as valid. This is a recent chang… (tuilleadh eolais)

The error: SEC_ERROR_UNKNOWN_ISSUER.

The certificates use sha256 for their signature algorithm.

Chrome and Edge both see the certificates as valid.

This is a recent change, I believe starting with Firefox 55.

Thanks for any help with this!

Asked by elliotstarks 3 bliana ó shin

Answered by cor-el 3 bliana ó shin

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I can't connect to all sites, the error code is "SEC_ERROR_UNKNOWN_ISSUER", can you help me?

I currently use FF version 63.0.3 on Windows 10, I have tried removing cert8.db, running FF in safe mode, even reinstalling FF, but it still didn't work. I also only use … (tuilleadh eolais)

I currently use FF version 63.0.3 on Windows 10, I have tried removing cert8.db, running FF in safe mode, even reinstalling FF, but it still didn't work. I also only use SMADAV and Windows Defender as antivirus. Only the official Mozilla site can be accessed.

As i recall, this problem started when I accidentally switched to a site. Could you help me?

And sorry if my grammar is bad, English is not my first language.

Asked by NotReality_ 1 bhliain ó shin

Answered by NotReality_ 1 bhliain ó shin

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The download page for the 64bit version of Firefox for Windows 10 gives the error SSL_ERROR_RX_RECORD_TOO_LONG in Firefox v 65.0 32 bit.

I'm using the 32 bit version of Firefox on a 64 bit ASUS Windows 10 laptop and there is no Flash plug-in. I thought to try switching to the 64 bit version, but I get the … (tuilleadh eolais)

I'm using the 32 bit version of Firefox on a 64 bit ASUS Windows 10 laptop and there is no Flash plug-in. I thought to try switching to the 64 bit version, but I get the above Network Protocol error message when trying to open the page https://download-installer.cdn.mozilla.net/pub/firefox/releases/65.0.1/win64/en-US/Firefox Setup 65.0.1.exe

Thanks

Asked by IsobelUK 1 bhliain ó shin

Answered by IsobelUK 1 bhliain ó shin

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SEC_ERROR_OCSP_MALFORMED_RESPONSE on https://www.google.be and https://www.youtube.com ?

Since some days I get SEC_ERROR_OCSP_MALFORMED_RESPONSE on https://www.google.be and https://www.youtube.com I checked all information from Mozilla and on internet but d… (tuilleadh eolais)

Since some days I get SEC_ERROR_OCSP_MALFORMED_RESPONSE on https://www.google.be and https://www.youtube.com I checked all information from Mozilla and on internet but didn't find any solution.Time setting is verified and ok. Other users on the same computer do not have this problem. Has somebody a clue ?

Asked by Tom 1 bhliain ó shin

Answered by Tom 1 bhliain ó shin

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Warning: potential security risk. Unable to access yahoo.com

Hello I have had this issue for 3 days now. I am unable to access yahoo mail or yahoo in general because I get warning potential risk ahead message. I had to make twitter… (tuilleadh eolais)

Hello

I have had this issue for 3 days now. I am unable to access yahoo mail or yahoo in general because I get warning potential risk ahead message. I had to make twitter account to be able to get in touch with yahoo support but they just offered a yahoo link which, of course, I am unable to open because of "potential risk ahead". I tried solutions suggested by people here at mozilla support, like clearing history, cache etc but it didn't work. I also tired accessing yahoo via internet explorer and chrome (installed on my father's laptop, windows 10) Of course same message appears. I am using windows 7 64 bit. I also tried Edge and of course it says yahoo site is not secure. I have never had these kind of problems before. I was always able to access yahoo via FIrefox and other browsers. It's really damn annoying because i see no solution to this damn crap. Also I am unable to upload a 170kb screenshot to show you the issue. Just keeps loading and loading and it doesn't stop. So I guess I will just have to describe it:

Firefox detected a potential security threat and did not continue to guce.yahoo.com. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details.

What can you do about it?

The issue is most likely with the website, and there is nothing you can do to resolve it. You can notify the website’s administrator about the problem.

Websites prove their identity via certificates. Firefox does not trust this site because it uses a certificate that is not valid for guce.yahoo.com. The certificate is only valid for *.amz-aws.jp. Error code: SSL_ERROR_BAD_CERT_DOMAIN

https://guce.yahoo.com/consent?gcrumb=gscOGxw&trapType=login&done=https%3A%2F%2Fwww.yahoo.com%2F&src= Unable to communicate securely with peer: requested domain name does not match the server’s certificate. HTTP Strict Transport Security: false HTTP Public Key Pinning: false

Asked by Norgathaal 1 bhliain ó shin

Answered by Norgathaal 1 bhliain ó shin

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using ff59.0.2 cant access amazon this error message www.amazon.com. Cannot communicate securely with peer: no common encryption algorithm(s). Error code: SSL_E

do not have security software. dl'd and ran malwarebytes nothing found. www.amazon.com. Cannot communicate securely with peer: no common encryption algorithm(s). Error c… (tuilleadh eolais)

do not have security software. dl'd and ran malwarebytes nothing found. www.amazon.com. Cannot communicate securely with peer: no common encryption algorithm(s). Error code: SSL_ERROR_NO_CYPHER_OVERLAP

Asked by zooecium 2 bhliain ó shin

Answered by cor-el 2 bhliain ó shin

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Error message "Secure connection failed and Firefox did not connect" when trying to access the PubMed website

As of today, I am unable to access PubMed (https://www.ncbi.nlm.nih.gov/pubmed) using Firefox 60.6.1ESR as browser installed on a Windows 7 Professional Service Pack 1 pl… (tuilleadh eolais)

As of today, I am unable to access PubMed (https://www.ncbi.nlm.nih.gov/pubmed) using Firefox 60.6.1ESR as browser installed on a Windows 7 Professional Service Pack 1 platform. I get an error that reads "Secure connection failed and Firefox did not connect". I tried some of the suggested solutions (erasing all cookies and cache, inactivating ad blocker, and system clock is OK), without success. PubMed works fine using Internet Explorer and Chrome on the same station. I contacted PubMed, suggesting that possibly their certificate is not recognized as valid by Firefox, or that their TLS (Transport Layer Security) might be outdated.

Asked by Sansbonsang 1 bhliain ó shin

Answered by cor-el 1 bhliain ó shin

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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… (tuilleadh eolais)

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?

Asked by Lthomas2 4 bliana ó shin

Answered by Lthomas2 4 bliana ó shin

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Unable to connect

So basically, Iv been trying to access steam & thesimsresource but weirdly an error message comes up It looks like this: Unable to connect Firefox can’t establish a c… (tuilleadh eolais)

So basically, Iv been trying to access steam & thesimsresource but weirdly an error message comes up It looks like this:

Unable to connect

Firefox can’t establish a connection to the server at www.thesimsresource.com.

   The site could be temporarily unavailable or too busy. Try again in a few moments.
   If you are unable to load any pages, check your computer’s network connection.
   If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.

Im really confused as this has never happened before. If you have an answer to my problem please explain in a simple way as all this is extremely complicated.

Asked by HelpmeImAnIdiot 2 bhliain ó shin

Answered by GµårÐïåñ 2 bhliain ó shin

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how do I permantly add exceptions

i use a wifi connection offered by my landlord that requires a log in process. it includes a Dell firewall. the certificate is considered unsafe by Mozilla. Mozilla allow… (tuilleadh eolais)

i use a wifi connection offered by my landlord that requires a log in process. it includes a Dell firewall. the certificate is considered unsafe by Mozilla. Mozilla allows me to add an exception, and the window that comes up has an option to make the exception permanent, but it wont allow me to check the box to make it permanent. it would make things easier if i could make the exception permanent. how do i make this certificate a permanent exception? thank you for your time in this matter, and have a great day!

Asked by Greg juu-st Greg 2 bhliain ó shin

Answered by McCoy 2 bhliain ó shin

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Can connect 2 websites like email, Twitter, LinkedIn, but others eg Facebook & Google Search... "Secure Connection Failed An error occurred....."

This is one of the notices i receive: Secure Connection Failed An error occurred during a connection to www.facebook.com. PR_CONNECT_RESET_ERROR The page you are tryin… (tuilleadh eolais)

This is one of the notices i receive: Secure Connection Failed

An error occurred during a connection to www.facebook.com. PR_CONNECT_RESET_ERROR

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

A similar message comes up when i try to use my friend Google. LOL The problems began this morning even though i haven't added new software or changed any settings. Please help. Thanks.

Asked by josephravick 10 mí ó shin

Answered by josephravick 10 mí ó shin

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Yahoo mail gives untrusted connection error

When I log into Yahoo mail on Firefox 40.0.3 (on Windows 7) on my company-supplied laptop, I get this message: "You have asked Firefox to connect securely to us-mg5.mail.… (tuilleadh eolais)

When I log into Yahoo mail on Firefox 40.0.3 (on Windows 7) on my company-supplied laptop, I get this message: "You have asked Firefox to connect securely to us-mg5.mail.yahoo.com, but we can't confirm that your connection is secure."

I cannot create an exception: "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."

The "technical details" section states: "us-mg5.mail.yahoo.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)"

This does not happen at home, so the company laptop has something to do with it, but, even on the company laptop I do not have this problem when using Chrome, so it's not that the company does not allow access to outside mail.

On Firefox, the problem is intermittent. Sometimes, there is no problem and everything works fine. Clearing history/cookies/cache and restarting does not fix the problem. It sometimes goes away on its own for a little while, but then returns.

I have searched every database I could for answers, but have found no solution yet. The computer clock is correct, I'm not using Avast, etc. (some of the other situations I've run across).

I hope that I can get this resolved, because I'd rather keep using FF, which I've used for years, than switch to Chrome.

Thanks for your help, in advance.

Asked by GrishaTigger 5 bliana ó shin

Answered by jscher2000 5 bliana ó shin

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How to determine which software is performing HTTPS scanning?

In my work computer, Firefox always gives "sec_error_unknown_issuer" error and only on HTTPS sites. I have browsed the forums and understood that this is most probably ca… (tuilleadh eolais)

In my work computer, Firefox always gives "sec_error_unknown_issuer" error and only on HTTPS sites.

I have browsed the forums and understood that this is most probably caused by a sofware that performs HTTPS scanning. (See [this](https://support.mozilla.org/en-US/questions/1030927) and [this](https://support.mozilla.org/en-US/questions/1026631#answer-650916) answer)

However, I really don't know which software is performing the HTTPS scanning exactly.

Is there a way that I can determine which software is doing the HTTPS scanning so that I will be able to add its certificate to Firefox and hence be able to use the Firefox properly?

Thank you very much in advance

Regards

Asked by utku1 5 bliana ó shin

Answered by jscher2000 5 bliana ó shin

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Why can't I log into my Macys.com account from Firefox? I can do it through Microsoft Edge (but would rather not)

I get an error from Firefox when trying to log into my Macys.com account. It says I don't have permissions to log on. However I have no problems logging in through Micr… (tuilleadh eolais)

I get an error from Firefox when trying to log into my Macys.com account. It says I don't have permissions to log on. However I have no problems logging in through Microsoft Edge. I'd rather not use Edge, but if Firefox is going to be difficult and deny access I guess I'll have to.

Asked by scolarco 4 bliana ó shin

Answered by cor-el 4 bliana ó shin

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Firefox rejects google as a "your connection is not secure"?

Since upgrading to firefox 50.0.1 I cannot do a search with Google (or any other engine) search. I get "Your connection is not secure". Everything works with Chrome and… (tuilleadh eolais)

Since upgrading to firefox 50.0.1 I cannot do a search with Google (or any other engine) search. I get "Your connection is not secure". Everything works with Chrome and Safari. I have a MACBook Pro OSX 10.12.1 with no antivirus. Firefox is set up to ignore IVP6 and I have no proxy. I can't even run the "SSL Labs' test page" as suggested by the Mozilla help pages. What is going on? What is stopping searches. I can browse other pages without a problem. thanks for any help.

Asked by robsj 3 bliana ó shin

Answered by jscher2000 3 bliana ó shin

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I can't bypass certificate warnings anymore (HSTS)

In short, I want to be able to bypass certificate warnings. Yes, I've seen this: https://support.mozilla.org/en-US/questions/1169632 "When there is HSTS(HTTPS Strict Tran… (tuilleadh eolais)

In short, I want to be able to bypass certificate warnings.

Yes, I've seen this: https://support.mozilla.org/en-US/questions/1169632 "When there is HSTS(HTTPS Strict Transport Security) set on the server, you cannot add a exception"

In less short, my case (because one needs to always justify one's methods), I set up a subdomain on a separate IP/host and I'm trying to test some project for which I use a webpage as a small visible part. However, the domain uses HSTS (HSTS == very nice).

However, I'm just casually testing something using a subdomain (or even a fake domain, or a real domain pointing to a new server being prepared, maybe using /etc/hosts) pointing to an external or internal IP on some old computer on my LAN or even on my own computer. And that's not possible anymore.

People should always have the option to bypass a warning, and I'm all for the warnings. If anything, there shouldn't have been a box with the option "always remember" ticked by default. There are other cases where this can be useful, some we don't even know yet.

Asked by BatManuel 3 bliana ó shin

Answered by philipp 3 bliana ó shin

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Error code: SEC_ERROR_UNKNOWN_ISSUER

No matter which website I try recently I keep getting "Your connection is not secure" and Error code: SEC_ERROR_UNKNOWN_ISSUER Other web browsers work fine. I tried disa… (tuilleadh eolais)

No matter which website I try recently I keep getting "Your connection is not secure" and Error code: SEC_ERROR_UNKNOWN_ISSUER Other web browsers work fine. I tried disabling Avira and have Firefox in my list of Windows firewall exceptions but the problem was not solved. Below is a dump of the error messages. Let me know what I can do to fix this issue once and for all. I am running Windows 10 and using Firefox 60.0.1 (64-bit)

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

https://www.google.com/

Peer’s Certificate issuer is not recognized.

HTTP Strict Transport Security: false HTTP Public Key Pinning: true

Certificate chain:


BEGIN CERTIFICATE-----

MIIDRzCCAi+gAwIBAgIEWxB1+TANBgkqhkiG9w0BAQsFADB2MQswCQYDVQQGEwJV UzEbMBkGA1UECgwSQ29udGVudFdhdGNoLCBJbmMuMSswKQYDVQQDDCJDb250ZW50 V2F0Y2ggQ2VydGlmaWNhdGUgQXV0aG9yaXR5MR0wGwYDVQQLDBR3d3cuY29udGVu dHdhdGNoLmNvbTAeFw0xODA1MTUyMDQwMjRaFw0xODA4MDcxOTUzMDBaMGgxCzAJ BgNVBAYTAlVTMRMwEQYDVQQIDApDYWxpZm9ybmlhMRYwFAYDVQQHDA1Nb3VudGFp biBWaWV3MRMwEQYDVQQKDApHb29nbGUgTExDMRcwFQYDVQQDDA53d3cuZ29vZ2xl LmNvbTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAwsXbrGozZwzGB1QVGP6N Nykl5GScJBVgMG/kUpJc6+koC+wu4+b2RNwMIHd42I8HS/84nf0NNMooc3yOM1Kh gexXGDKDa0eMCTMWs0fobNH6tYTJr1TQbYM9aK3vpdCqDJs3G7gE/1cH7hY5MGgv 2lZLxeoKFag7DzfGGavU1tMCAwEAAaNvMG0wEwYDVR0lBAwwCgYIKwYBBQUHAwEw DgYDVR0PAQH/BAQDAgeAMBkGA1UdEQQSMBCCDnd3dy5nb29nbGUuY29tMB0GA1Ud DgQWBBRiz5xdwnstoQ+lsGNLtCfI3OH14DAMBgNVHRMBAf8EAjAAMA0GCSqGSIb3 DQEBCwUAA4IBAQBYdNDKthe3FAk44Rsq5rr3qJ28v0O1vj7FAUTAPvI9WGf6QsHp yxZjgHgrVi8Vnncp99Os3sOxm7NKAC1I8caUHs1Y0BNaInPcokq/154P8LG2IIiy iuzeB9Rjku7KlZAujSNJmkdo2lGvaCwjyxka6I2/wzcHXrdq/ee2tEBsShTD7GYs qwdqvgUV/+AIQ0ioe2xyrypNSxb7wAUv+exRW9zUtie7h7Of2SoSlPuroHsejK9Y R2a1ZZKqXMDMyeZ3Nz2g00Wz9c96ruRRz7DjX6wQhIV1gLsm3yOavcA2l/TzuR4x 55P2g+nXPeVsAW2/R68E6Z70Zt87Mqx+KNWD


END CERTIFICATE-----
BEGIN CERTIFICATE-----

MIIEKzCCAxOgAwIBAgIEV0+ulDANBgkqhkiG9w0BAQsFADB2MQswCQYDVQQGEwJV UzEbMBkGA1UECgwSQ29udGVudFdhdGNoLCBJbmMuMSswKQYDVQQDDCJDb250ZW50 V2F0Y2ggQ2VydGlmaWNhdGUgQXV0aG9yaXR5MR0wGwYDVQQLDBR3d3cuY29udGVu dHdhdGNoLmNvbTAeFw0xNjA2MDIwMzU3MDhaFw0yNjA1MzEwMzU3MDhaMHYxCzAJ BgNVBAYTAlVTMRswGQYDVQQKDBJDb250ZW50V2F0Y2gsIEluYy4xKzApBgNVBAMM IkNvbnRlbnRXYXRjaCBDZXJ0aWZpY2F0ZSBBdXRob3JpdHkxHTAbBgNVBAsMFHd3 dy5jb250ZW50d2F0Y2guY29tMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKC AQEAuEsAnD8pG0iLVFHRk/nYuSbo5zpQd4laQE+O+r/u/wG7WZxuFb6V+20PM9lZ aHxFe8LdtUd5Cexukc5mZUiK/8WkJ8tZYi/lGm2U9DDChiliZIg/bHey1Qknl8AZ J+pPR48/u50LRoMmCz3xwZAVZ4VFSuZF9gd1lRA2bEgz1vN1CBcyQzO6uBKndFA/ KHGnfYbU558Xv0qpTThKeuvpAr5ZfEy2/EMc6N1IUyVXyW7S2Huhdz9nybRPLkfz zU1gAMh9rF7Upr88Ps4vo6OEd6F7evTzT+0qyocup38JuU+85qXOy0Z5WX6nAnbu SRzJOAPn8/2UlkBnvHhmGt8dvQIDAQABo4HAMIG9MB0GA1UdDgQWBBQaHCKd3NSd P4iX8W/CXorLidrHEDAfBgNVHSMEGDAWgBQaHCKd3NSdP4iX8W/CXorLidrHEDAS BgNVHRMBAf8ECDAGAQH/AgEAMAsGA1UdDwQEAwIBrjAxBglghkgBhvhCAQ0EJBYi Q29udGVudFdhdGNoIENlcnRpZmljYXRlIEF1dGhvcml0eTAnBgNVHSUEIDAeBggr BgEFBQcDAQYIKwYBBQUHAwIGCCsGAQUFBwMEMA0GCSqGSIb3DQEBCwUAA4IBAQAY Y2OEF0wHtPaY97IojtXlcysMdweoseL+tLpF0T+oNBg19tlVVa+hNhfgmhGYBJKh 3hAfYemtWTn/fokzCK6t7EMF8uhGFhL/lB4q1KZwBi9aFASxAlbPktaFv1FJUOWK 5xOZ03leGUPapVI+cT3PI5bWyIb/8O9OZP0d+SVNRfnSBTDzyKQMdrGJreG+DTSd IRqcOTbAkb8VXdoJfAGHhdTbcAnVzVDcxMLdM14zQUsHGHTPnIeS2k/A4HAER0iT ugU0Lu8LlUK70tdVoUH5x91VWSlF6rtQP76cRZxRJx/3zp4QYFQqB+L0l3sxS6YS mL7lWHKPZsD5YtJF2kYe


END CERTIFICATE-----

Asked by romrom72 2 bhliain ó shin

Answered by romrom72 2 bhliain ó shin