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Webpage errors out with "Error SSL_ERROR_RX_RECORD_TOO_LONG", but works in Private Browsing?

A webpage on our internal company domain ("") errors out with "Error SSL_ERROR_RX_RECORD_TOO_LONG". If I switch to private browsing the same page works. The page also wor… (read more)

A webpage on our internal company domain ("") errors out with "Error SSL_ERROR_RX_RECORD_TOO_LONG". If I switch to private browsing the same page works. The page also works with all other browsers without issue. If I "reset firefox", the page starts working again - even after firefox sync has re-installed all my add-ons. After some indeterminate amount of time (weeks) the page starts to error out again. This problem occurs on Firefox 75 on Ubuntu 18.04 as of now.

I'm at a total loss as to how to even begin to debug this - any pointers on where to start looking? As I mentioned the webpage that errors out the only page on an intranet so I cannot share the URL.

Asked by kabhijit 1 month ago

Last reply by FredMcD 3 weeks ago

HTTP Error 404. The requested resource is not found.

Hi there, We have a weird problem with firefox only (not this problem with other web browser like Chrome, Ie or Edge). The problem is that we cannot browse this website … (read more)

Hi there,

We have a weird problem with firefox only (not this problem with other web browser like Chrome, Ie or Edge). The problem is that we cannot browse this website at the same time. No problem to browse one website, but going on the seconde one and you will get on 404 error.

Not Found ________________________________________ HTTP Error 404. The requested resource is not found.

Same error for 3 others.

Just waiting few minutes (at least 5min), refresh the second website, it’s working coming back on the first tab (with the first website), refresh and you get the error 404.

This problem occurs only when we are using IPV6 connexion on an HTTPS websites (only on some of ours web sites (https://www.ticpharma.com/home.php, https://www.techopital.com/ https://www.gerontonews.com, https://www.ticsante.com/home.php and https://www.apminternational.fr/). These 5 website sharing the same SSL certificats. It’s a multi domain SSL certificats provide by Gandi.net.

No problem when we use the Firefox PRIVATE windows. No problem when we browse theses websites in http and IPV6. No problem when we browse theses websites in httpS and IPV4. No problem with other browser in httpS and IPV6.

So only problem with Firefox, in IPV6 and HPPS. This problem occurs on multiple computers, with diffrent Anti-Virus, from different location, for different network and ISP provider. So I guess there is a bug somewhere in firefox.

Thanks for your help. Regards.

Asked by Seb. D 1 month ago

Last reply by Roland Tanglao 1 month ago

Stop addons being disabled when PC has the wrong date

Hello, whenever I change the date on my PC ( which I do several times per week for experiments), all my addons get disabled, as the browser decides they are unsigned (as … (read more)

Hello, whenever I change the date on my PC ( which I do several times per week for experiments), all my addons get disabled, as the browser decides they are unsigned (as visible in the screenshot)

And there is no way to re-enable them - I have to search for them again, go to the download site, and download them again. Yet the browser knows perfectly well that the date is wrong - so it should not be very hard to stop him from disabling addons during a period of wrong date.

Furthermore - there should be an option to re-check the validity of (all) addons which were disabled with 1 click, without having to re-download them.

Asked by b.gyulmezov 1 month ago

Last reply by cor-el 1 month ago

An error occurred during a connection to home.packagesear.ch. SSL received a record that exceeded the maximum permissible length. Error code: SSL_ERROR_RX_RECO

This is the message that I receive when I click on the Firefox icon: Secure Connection Failed An error occurred during a connection to home.packagesear.ch. SSL received a… (read more)

This is the message that I receive when I click on the Firefox icon:

Secure Connection Failed

An error occurred during a connection to home.packagesear.ch. SSL received a record that exceeded the maximum permissible length.

Error code: SSL_ERROR_RX_RECORD_TOO_LONG

   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.

Asked by espina7 1 month ago

Last reply by FredMcD 1 month ago

My SSL-secured website gets warning "connection not secure" when I access the site by IP:443

When I access my own development website by domain name (with SSL signed by Digicert), it's fine, I see the lock symbol in FF. When I access it by typing https://[IP addr… (read more)

When I access my own development website by domain name (with SSL signed by Digicert), it's fine, I see the lock symbol in FF. When I access it by typing https://[IP address]:443 , I get the "not secure" warning. The IP address has a valid reverse DNS that points to the domain name, which in turn has the valid SSL cert. The domain's A Record also points back to the same IP address. I'm curious why does Firefox do this, and is there anything I can do in my DNS settings to remove the warning for other users -- without changing FF settings? Thanks.

Asked by DavidG 1 month ago

Last reply by jscher2000 1 month ago

MacOS Catalina - setting security.enterprise_roots.enabled to true - Doesn't work as expected

When a user, on a MacOS Catalina, sets the security.enterprise_roots.enabled to true in Firefox, the certificates are not read from MacOS keychain store. The method used … (read more)

When a user, on a MacOS Catalina, sets the security.enterprise_roots.enabled to true in Firefox, the certificates are not read from MacOS keychain store.

The method used to set the parameter to true:

Use Firefox on MacOS Catalina, type 'about:config' in the address bar. If prompted, accept any warnings. Right-click to create a new boolean value, and enter 'security.enterprise_roots.enabled' as the Name Set the value to 'true'

What is your recommendation to bypass this problem without manually importing the certificates in the FF certificates authorities ? The goal is to read the certificates from the system store. This parameter works perfectly on MacOS Mojave & Windows.

Asked by Firefoxer 1 month ago

Last reply by Mike Kaply 1 month ago

connection reported secure and insecure at the same time

On a particular website, I click the lock in the address bar to see if the connection is secure. It is reported secure, see first image, it also says which CA verified th… (read more)

On a particular website, I click the lock in the address bar to see if the connection is secure. It is reported secure, see first image, it also says which CA verified the certificate. All seems well but if I click on more information, i get what is shown on the second image, firefox suddenly reports that the site is not encrypted. The website runs on IIS. This happens with both internal CA issued certificate (the ca is imported into firefox as trustworthy root) as well as with letsencrypt issued certificate. Neither internet explorer nor chrome find any anomalies and report the site as trustworthy and all certificates in order. Why is this happening and what is the cause? (i have another server at the same site running also IIS with exchange where the certificate shows correctly in firefox)

Asked by leosenko 2 months ago

Last reply by cor-el 2 months ago

Firefox isn't trusting a replaced user certificate.

I access one TLS URL that's secured by user certificate. I had no problem importing the .p12 certificate into my profile's user certificate store ("Your Certificates"), a… (read more)

I access one TLS URL that's secured by user certificate. I had no problem importing the .p12 certificate into my profile's user certificate store ("Your Certificates"), and I could access the URL.

On the TLS URL system, for an unrelated reason, I had to generate a new certificate. My task was to remove the user certificate from my profile's certificate store, and replace with the new certificate.

The replacement was perfect: Delete the old certificate, import the new certificate. Enter the cert password, and see the new certificate, with its new serial ID listed in Firefox's certificate store.

When I try to visit the TLS secured URL, Firefox gives "Secure Connection Failed" and "SEC_ERROR_BAD_SIGNATURE". It says "Peer has an invalid signature."

I'm at a loss how to proceed troubleshooting this.

Asked by NDeMarco 2 months ago

Last reply by dkeeler 2 months ago

chrome is allowing https://www.apeasternpower.com/ why Firefox is not allowing.

Previously all my transactions of https://www.apeasternpower.com/ was being done on Firefox only. But suddenly Firefox is not allowing this website. But at the same time… (read more)

Previously all my transactions of https://www.apeasternpower.com/ was being done on Firefox only. But suddenly Firefox is not allowing this website. But at the same time Chrome is allowing this website. What is the reason.

Asked by murarji 2 months ago

Last reply by cor-el 2 months ago

I had a digital certificate installed and working on the computer to access Spanish government websites. Firefox upgrades mean not working

Ive had a digital certificate installed and working to allow me to access Spanish government websites. I've tried a lot of things this afternoon like checking pop ups are… (read more)

Ive had a digital certificate installed and working to allow me to access Spanish government websites. I've tried a lot of things this afternoon like checking pop ups aren't blocked to see why the webpage won't work. Ive even put the sede.sepe.gob.es in the exemptions of my antivirus software. Is there a checklist to go through to undo the changes that firefox updates and upgrades have made. Shouldn't the software respect that we don't want to have to revisit all our preferences everytime they force an update or upgrade?

Asked by sedghill 2 months ago

Last reply by user1321319 2 months ago

How do I disable Warning: Potential Security Risk Ahead for sites with invalid certificates?

How do I disable the warning screens that say "Warning: Potential Security Risk Ahead" when I visit sites on my home network (192.168.1.0/24)? Nothing I've tried seems t… (read more)

How do I disable the warning screens that say "Warning: Potential Security Risk Ahead" when I visit sites on my home network (192.168.1.0/24)? Nothing I've tried seems to work. Thanks, Eric

Asked by eric64 3 months ago

Last reply by cor-el 2 months ago

I cannot connect to firefox and a lot of other websites with my firefox browser

I can't connect to Firefox account but to many other websites too, see message below: https://accounts.firefox.com/?action=email&context=fx_desktop_v3&entrypoint… (read more)

I can't connect to Firefox account but to many other websites too, see message below:

https://accounts.firefox.com/?action=email&context=fx_desktop_v3&entrypoint=activity-stream-firstrun&utm_source=activity-stream&utm_campaign=firstrun-release&utm_term=trailhead-join-supercharge&device_id=&flow_id=&flow_begin_time=&style=trailhead&email=anstersteeg%40gmail.com

Uitgever van certificaat van peer wordt niet herkend.

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

Certificaatketen:


BEGIN CERTIFICATE-----

MIIEfzCCA2egAwIBAgIMBAAAAPlKSjXAlCd3MA0GCSqGSIb3DQEBCwUAMFQxGTAX BgNVBAoMEEFPIEthc3BlcnNreSBMYWIxNzA1BgNVBAMMLkthc3BlcnNreSBBbnRp LVZpcnVzIFBlcnNvbmFsIFJvb3QgQ2VydGlmaWNhdGUwHhcNMTAwMzA4MTEzNzQy WhcNMzAwMzAzMTEzNzQyWjCBjzELMAkGA1UEBhMCVVMxEzARBgNVBAgTCkNhbGlm b3JuaWExFjAUBgNVBAcTDU1vdW50YWluIFZpZXcxGzAZBgNVBAoTEk1vemlsbGEg Rm91bmRhdGlvbjEXMBUGA1UECxMOQ2xvdWQgU2VydmljZXMxHTAbBgNVBAMTFGFj Y291bnRzLmZpcmVmb3guY29tMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKC AQEAuzQXuKCp2VnZsy2H6r5hNYLm9CYcHyDz1l0rgW9pCGGGmoIZSor76NMnFAZi d9kjU15dvCFVckdRqa0WfPpwRt+kyB83ATGknB7TxWdxerH+QNoBAJgVKKB0j3I6 24Ezx6keobFmUuOZ1dR7URaogtWRD58/axYEvCWuiAY+XVbB0uouMOnOL1KPTtFw MRSGS79g4eTt4JM+Ryej0g3eJvEDeSj98SWgmCDKghfZEWpBNFPfoP4vPCljzJV9 FtFcoeOeEbsh4JH39uPtehupkjjcZ7XMVtmom6NZ3ED/c/asdxWOLYDmvBBN3vlt 5dMfgvdSoKzP+VTM6wgDEtQkeQIDAQABo4IBEzCCAQ8wgc8GA1UdEQSBxzCBxIIU YWNjb3VudHMuZmlyZWZveC5jb22CGGFwaS5hY2NvdW50cy5maXJlZm94LmNvbYIb c2NyeXB0LmFjY291bnRzLmZpcmVmb3guY29tgh12ZXJpZmllci5hY2NvdW50cy5m aXJlZm94LmNvbYIab2F1dGguYWNjb3VudHMuZmlyZWZveC5jb22CHHByb2ZpbGUu YWNjb3VudHMuZmlyZWZveC5jb22CHGNvbmZpcm0uYWNjb3VudHMuZmlyZWZveC5j b20wDAYDVR0TAQH/BAIwADAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYB BQUHAwEGCCsGAQUFBwMCMA0GCSqGSIb3DQEBCwUAA4IBAQBS3SaA2Q/RkUr4Td73 pkOrqL5N6oJjJd5obLycGKt6bfd/FO+hWC/EnRlZYdthCg/Wiak4Sd9fTC+nPhOD B3N1GGmw+INpGIQitFhQAFe9KsBsAae3yNr3fZL5fzrrK8up4frzD7kgmvLUlMyw I1GdEMT882EmTlg80C62fj30iJUgkjxh8SCMhP/Cs87r6u0UbtbMWJIgbOcAFSdj 5hIZsk7uoZNGW9PTGIOZhhIQzNcqw6apH9Dm0tMbKbF+VXrJPXAP0XRfaU9Nrx3P GKme5U/EJQEQs5yGZVezzREb2F574xxN80RcwvOWy6nIi02SdrwsTtoG1pSHhJ2z MIKU


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

MIIDXzCCAkegAwIBAgIIcpdzWGauMrUwDQYJKoZIhvcNAQELBQAwVDEZMBcGA1UE CgwQQU8gS2FzcGVyc2t5IExhYjE3MDUGA1UEAwwuS2FzcGVyc2t5IEFudGktVmly dXMgUGVyc29uYWwgUm9vdCBDZXJ0aWZpY2F0ZTAeFw0wNzAxMTIxNDAwMThaFw0y NzAxMDcxNDAwMThaMFQxGTAXBgNVBAoMEEFPIEthc3BlcnNreSBMYWIxNzA1BgNV BAMMLkthc3BlcnNreSBBbnRpLVZpcnVzIFBlcnNvbmFsIFJvb3QgQ2VydGlmaWNh dGUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQC7NBe4oKnZWdmzLYfq vmE1gub0JhwfIPPWXSuBb2kIYYaaghlKivvo0ycUBmJ32SNTXl28IVVyR1GprRZ8 +nBG36TIHzcBMaScHtPFZ3F6sf5A2gEAmBUooHSPcjrbgTPHqR6hsWZS45nV1HtR FqiC1ZEPnz9rFgS8Ja6IBj5dVsHS6i4w6c4vUo9O0XAxFIZLv2Dh5O3gkz5HJ6PS Dd4m8QN5KP3xJaCYIMqCF9kRakE0U9+g/i88KWPMlX0W0Vyh454RuyHgkff24+16 G6mSONxntcxW2aibo1ncQP9z9qx3FY4tgOa8EE3e+W3l0x+C91KgrM/5VMzrCAMS 1CR5AgMBAAGjNTAzMA8GA1UdEwEB/wQFMAMBAf8wCwYDVR0PBAQDAgIEMBMGA1Ud JQQMMAoGCCsGAQUFBwMBMA0GCSqGSIb3DQEBCwUAA4IBAQAY6FfCnn5J31KZnUhd UUfeGA0xFpt3uaqSYL4/eJjbLrduzYlPIfOEGnOhlMuTxVoASxgxR4dQjrpQJHRK lNaQACiwkvRC1F7cqPD/tJqkxlzpbe5VAzdkg+tX6dS5TFga2PuI9Ff5KAVWlj1l YVoU7wp3wnzjAjQqfQMm45r+x/uFDH9kt8JWXpLLKj6LQA7IUwD+LYxhCGd6L7ys Kk2Vu2XdM0Lh3CSZ+csMXdQlXcbLgFbSfo6uti9ogqeqOryS3np/M8blhC2sEyGo mKm1VcPHsiUaqqssHn0QzCjuFDp7D7LoY+XtZiZuLjq8+s8+zTvWp0QoX8Pql4mi WWfT


END CERTIFICATE-----

Asked by Jan Tersteeg 3 months ago

Last reply by TyDraniu 3 months ago

Mozilla Firefox does not work when disabling the encryption key TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014)

Dear Mozilla team, We are a company that develops web systems. The customer’s security service asks us to close all old encryption keys on the server in order to avoid sy… (read more)

Dear Mozilla team,

We are a company that develops web systems. The customer’s security service asks us to close all old encryption keys on the server in order to avoid system vulnerabilities and use only new keys. We disabled most of the old keys and the system works fine on all browsers. As soon as we turn off the encryption key TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014), then all web systems stop working through the Mozilla Firefox browser. (At the same time, everything works correctly on other browsers). The Mozilla Firefox Documentation says that this browser supports new encryption keys and can work without old encryption keys. Link (https://wiki.mozilla.org/Security/Server_Side_TLS). Also on our server are included all the necessary encryption keys for Mozilla Firefox to work.

Do you have any ideas on how to solve this?

Asked by yulyan.karpiy 3 months ago

Last reply by dkeeler 3 months ago

An error occurred during a connection to my website. Peer’s Certificate has been revoked. Error code: SEC_ERROR_REVOKED_CERTIFICATE

While visiting my website , i receive the error : An error occurred during a connection to my website. Peer’s Certificate has been revoked. Error code: SEC_ERROR_REVOKED… (read more)

While visiting my website , i receive the error : An error occurred during a connection to my website. Peer’s Certificate has been revoked.

Error code: SEC_ERROR_REVOKED_CERTIFICATE

Also while sending emails from mozilla thunderbird i receive the same error. I am able to send emails and access my website from Google chrome browser, Outlook email client and also from my phone.

Kindly look into to this and provide a solution

Asked by it_sts 3 months ago

Last reply by jscher2000 3 months ago

How to fix Access Denied to http://support.microsoft.com

After the January update Mozilla Firefox reloads to many Microsoft websites delayed Access Denied. https://support.microsoft.com/en-us/help/13853/windows-lifecycle-fact-s… (read more)

After the January update Mozilla Firefox reloads to many Microsoft websites delayed Access Denied.

https://support.microsoft.com/en-us/help/13853/windows-lifecycle-fact-sheet Access Denied You don't have permission to access "http://support.microsoft.com/en-us/help/13853/windows-lifecycle-fact-sheet" on this server.

Reference #18.2d15e8ac.1580920353.2dd4db75


https://support.microsoft.com/ Access Denied You don't have permission to access "http://support.microsoft.com/" on this server.

Reference #18.615e8ac.1580920716.53b779b2


https://support.microsoft.com/en-us/...-update-errors Access Denied You don't have permission to access "http://support.microsoft.com/en-us/help/10164/fix-windows-update-errors" on this server.

Reference #18.5d472317.1580069149.1b9f5e94

https://support.microsoft.com/en-us/...update-history Access Denied You don't have permission to access "http://support.microsoft.com/en-us/help/4529964/windows-10-update-history" on this server.

Reference #18.66472317.1580069133.9cd4a82b

https://support.microsoft.com/en-us/...cle-fact-sheet Access Denied You don't have permission to access "http://support.microsoft.com/en-gb/help/20443/windows-10-battery-saving-tips" on this server.

Reference #18.5d472317.1579991513.16dd70d8

https://support.microsoft.com/en-us/...l-numbers-when Access Denied You don't have permission to access "http://support.microsoft.com/en-us/help/937251/disk-drive-numbers-may-not-correspond-to-the-sata-channel-numbers-when" on this server.

Reference #18.5d472317.1580051243.19dacd87



There are several hundred browser websites that are opened after reboot with Mozilla Firefox reload.

How did this happen with a reload?

Is this a cache or cookie problem?

What was changed in the January Mozilla Firefox update?

Ccleaner requires that the browser is closed to clear cache and cookies.

If this were done the several hundred webpages would no longer reopen.

How can the Mozilla Firefox browser be modified so that it no longer displays Access Denied without losing the reload option for the hundreds of websites that are currently open?

(The browser typically has the default settings)


The Google Chrome and Internet Explorer browsers can open these websites without problems. Other end users opening the same websites with Mozilla Firefox did not see Access Denied.


For this problem please indicate:

What specifically happened with the January update that may have caused this problem? If it was not the January update what else could have caused this problem? How can the problem be fixed so that the webpages that are currently open can easily be reopened after a reboot with reload? What could have been done to prevent this Access denied problem?

Asked by ineedhelpwithfirefox 3 months ago

Last reply by jscher2000 3 months ago

Potential Security Issues on every single page

I'm getting "Error code: SEC_ERROR_CA_CERT_INVALID" on every page. (Full details in screenshot) I've tried accessing google and reddit, which I had been browsing no probl… (read more)

I'm getting "Error code: SEC_ERROR_CA_CERT_INVALID" on every page. (Full details in screenshot)

I've tried accessing google and reddit, which I had been browsing no problem, but no luck. I can't even access Mozilla help. And I haven't been able to bypass anything.

I've been googling this (on Chrome! yuck!), with no luck. If I stumbled upon the answer, I wasn't tech savvy enough to recognize or implement it.

Could someone give me a hand?

Asked by jdoerflinger2 4 months ago

Last reply by philipp 4 months ago

Firefox error

On my PC when trying to connect several sites I receive a message that the response telling me that the authenticity of the data received couldn't be verified this only h… (read more)

On my PC when trying to connect several sites I receive a message that the response telling me that the authenticity of the data received couldn't be verified this only happens on my PC I'm running Windows 7 pro can connect on my Android phone

Asked by chalmersi 4 months ago

Last reply by FredMcD 4 months ago