Firefox Community Forum

I use Mozilla as my browser and my primary mail is through ATT. For the last week, I keep getting an error message that I may be having connectivity issues so I can't connect to my mail and keep getting a logout. In the past, over time, I have to clear my cookies or I can't log in but clearing my cookies(everything) hasn't been working for about a week. It's not a network issue or with my account. I can access my ATT mail using a different browser- it's just not through Mozilla anymore. I can log into my ATT account through Mozilla, it just won't connect me to my mail.

This is the error message I get:

Something's gone wrong We may be having trouble with your connection. Connecting your device to Wi-Fi could help fix the issue or try again later. If you were using an app, close this page. Otherwise, start over.

Hi, while on 5G with my iPhone I cannot connect to Firefox («Internet connection appears to be offline») while I connect without any problem on Wi-Fi. However when I connect my iPad with iPhone 5G hotspot I have no problem .

Hello, FireFox keep blocking access to one of my Websites. I am getting this message: Can you please help?

Did Not Connect: Potential Security Issue

Firefox detected a potential security threat and did not continue to account.apps.progressive.com because this website requires a secure connection.

What can you do about it?

account.apps.progressive.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.

Probably nothing, since it’s likely there’s a problem with the site itself.

After the following automatic update (see data) below, I cannot browse anymore with firefox (sites cannot be found anymore with firefox but instead i.e. with Google Chrome). Using firefox with my Iphone works perfectly well. What is the reason?

Firefox 135.0 (20250130195129) Details Installiert am: 4. Februar 2025 um 16:01:20 Status: Das Update wurde erfolgreich installiert

How can we trust you, when their is no response to our questions or any serious concerns about security settings that reside in our address box ? Connecting to firefox for any logical help or honest dialogue is almost impossible. I don't feel secure using firefox simply because no one ever responds or seems to care about web security...Should we continue to use https://www. and if not why ...and how does firefox protect us ? No help. No explanations. Is it time to look at a more secure browser that responds to security issues ?

I CANNOT get on to Archive of Our own, all firefox does is tell me "Secure Connection Failed" and display an error page. I have done everything, I have cleared my cache I have tried disabling security things and add ons I have tried the "about:config" thing MULTIPLE TIMES. It's only happening on my computer not on my phone PLEASE someone fix this I just want to update my fanfics I don't know why this is happening it's only been going on for about a week and it is UNBEARABLE.

Entire error message:

Secure Connection Failed

An error occurred during a connection to archiveofourown.org. You are attempting to import a cert with the same issuer/serial as an existing cert, but that is not the same cert.

Error code: SEC_ERROR_REUSED_ISSUER_AND_SERIAL

   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.

Learn more…

Hi all, trying to configure autoupdate settings for my org, as we're discovering several out of date installations.

One sticking point I'm seeing is that I see conflicting documentation on the required proxy setting for background updates to work.

This page states that the correct proxy setting is to use system settings https://support.mozilla.org/en-US/kb/enable-background-updates-firefox-windows

Meanwhile, this page states that proxy settings must not be configured. https://firefox-source-docs.mozilla.org/toolkit/mozapps/update/docs/BackgroundUpdates.html

Which one is authoritative?

as an aside, some of the required prefs cited in the second document don't appear in about:config on the current version. I do see app.update.background.allowUpdatesForUnelevatedInstallations and app.update.auto.migrated which I'm assuming for the moment are the correct prefs, but can that be confirmed?

Whenever I try to use Google search whith Firefox or Librewolf I get "Our systems have detected unusual traffic from your computer network. This page checks to see if it's really you sending the requests, and not a robot."

I do NOT get this when using Chrome or Edge on the same computer.

Linux Mint OS 21.3