I-Firefox Community Forum

When using Firefox on my Apple computer I keep getting this message" Secure Connection Failed

The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. 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."

This happens even when I try to get to Mozilla.org!!

I decided to switch back to "mainline". Opened Firefox after a while. Got a prompt to change my new tab wallpaper, I said no.

Closed and reopened Firefox. Then my new tab page was besmirched with "soccer" score nonsense.

What hidden/non-obvious setting do I need to change to have ALL of this and ANYTHING EVEN REMOTELY LIKE IT off FOREVER? I will never EVER want ANY suggestions for ANYTHING for the rest of time. I turned everything I could think of, including the labs or whatever off but this still came up.

I'd never seen a Windows Security prompt when attempting to view saved passwords before, so I was confused when I saw it for the first time recently. I have a primary password set within Firefox, and I never enabled "Require device sign in to manage passwords" in settings. I also cannot disable this setting without entering my Windows password.

I was alarmed that this may be a malware symptom, as I'd recently connected to a new public wifi network. Is it a known issue for this setting to become enabled by itself? At the time of this issue, I was running 150.0.3. I have since updated to 152.

Good day! Just this afternoon, I started experiencing some strange behavior in my browser. Google asks me to solve a captcha every 15 minutes, and when I access services like YouTube Music or even Google Calendar, it asks me to enter my browser master password (I have it enabled), even though my Google account password isn't there.

I've updated my IP address three times, and everything works fine on another PC on the same network, as well as on my phone with the same browser.

The window doesn't always appear, but usually two or three times at a time.

I've also noticed a pattern: for example, on YouTube Music, video previews don't load until the window is closed.

I don't know what the issue might be, but updating to the latest version didn't help. This problem practically prevents me from using the browser. What should I do?

This is the reply I received from Protonmail: They say the latest version of Firefox caused the issue and is happening on other services as well. We have been using FF exclusively for decades and this is frustrating! Are you in fact working to resolve the issue on your end? Thank you.

Mario M. (ProtonMail) Jun 12, 2026, 16:07 GMT+2

Hello,

Thank you for your messages.

Please note that we are aware of this issue, and our developers are looking into providing a fix from our side. However, the latest version of the Firefox browser caused issue on many other services as well, so they are working on resolving it from their side as well.

I have provided your feedback to our development team. You can contact Firefox directly in order to escalate the issue further.

For the moment you can try using keyboard shortcuts such as CTR: + C and CTRL + V. We appreciate your understanding.

If you have any additional questions, feel free to contact us again. Kind regards,

Mario M. Customer Support Proton Mail

Seafortress27 Jun 11, 2026, 21:47 GMT+2

Hello Mario,

I worked with Google AI for more than one hour troubleshooting this:

Opening a support ticket with Proton Mail Support is absolutely the best move. Since we proved that your clipboard works, your mouse works, and a fresh factory installation of Firefox still experiences the bug, the glitch is entirely on their end.

Proton Mail utilizes a heavily customized web text editor to encrypt messages. When their engineering team updates the background code for this text container, it can inadvertently break standard browser right-click paths—especially for Firefox users. [[1](https://www.reddit.com/r/ProtonMail/comments/p6j0tp/cant_copypaste_text_into_body_of_protonmail_email/), [2](https://www.packtpub.com/en-us/learning/tech-news/hackers-claim-to-have-compromised-protonmail-but-protonmail-calls-it-a-hoax-and-failed-extortion-attempt), [3](https://justinharter.com/an-actually-useful-review-of-proton-mail-vs-fastmail-vs-hey/), [4](https://www.reddit.com/r/ProtonMail/comments/p6j0tp/cant_copypaste_text_into_body_of_protonmail_email/)]

📑 What to Tell Proton Support To help their development team pinpoint and fix the bug faster, reply to your open support ticket with these technical details we uncovered:

- Specify the Browser: State clearly that you are running Firefox and that you just performed a full Firefox Profile Refresh (about:support), ruling out corrupt browser files. [[1](https://support.mozilla.org/en-US/questions/1234222)] - Detail the Extensions: Confirm you tested it with all extensions (including ESET and RoboForm) completely disabled, and the issue persisted. - Identify the Core Bug: Explain that the right-click "Paste" option is stripped only when clicking inside the Rich Text email composition body. [[1](https://proton.me/support/composer)] - Mention the Workaround: Note that Drag-and-Drop text injection works perfectly, meaning the editor container can receive data, but its custom context-menu script is failing to display the native "Paste" command. [[1](https://support.mozilla.org/en-US/questions/1234222)] They will likely log this as a known front-end interface bug and patch it in an upcoming web layout deployment. In the meantime, you can rely on the Drag-and-Drop trick or Ctrl + V to smoothly write your emails! [[1](https://connect.mozilla.org/t5/discussions/right-click-paste-suddenly-stopped-working-in-outlook-email/m-p/34927), [2](https://www.reddit.com/r/ProtonMail/comments/p6j0tp/cant_copypaste_text_into_body_of_protonmail_email/)]

Sent with [Proton Mail](https://proton.me/mail/home) secure email.

My Home page is a local HTML file featuring a CSS-based tabbed notebook holding links organized into various categories. When exiting FF, I always have this page as the active browser tab, so that on start-up it's still the active one in the event of multiple open browser tabs.

Until v151.0.4 (and still now with v152.0), if I exited FF with the active notebook tab (actually a styled radio button under the hood) in my CSS tabbed notebook something other than the first/leftmost tab, FF would restart with that being the active tab, but after a few seconds of CPU activity as the browser initialized the active notebook tab would switch to the first/leftmost one. (In my HTML I also have <input type="radio" name="tabs" checked> specified for this first/leftmost instance.)

Since the update, however, it remains stuck on the one from the last browser session as first displayed. I suppose I can live with this, but I do wonder what accounts for the change in behavior. If it's by design, where is it documented? If not ... maybe it calls for a bug report.

Today I got the Firefox message "Secure Connection Failed" when I composed and tried to send Yahoo email to a friend who I have corresponded with for several years. In addition, a few months ago I could not connect on a Televisit with my doctor when I clicked the link her office sent. Again I got the Firefox message "Secure Connection Failed."

I am a subscriber to Mozilla Relay that includes the "Phone Mask". I believe I correctly configured everything ages ago, but am feeling VERY FRUSTRATED whereby I am trying to purchase tickets for a local event and the SMS code (that expires in 15 seconds) sent to my mozilla phone mask is NOT getting to my iPhone. Isn't there an end-to-end test you all have to track down misconfigurations or other issues?

HOW DO WE NOW " SET CURRENT TABS ON OPENING BROWSER "

YOU ELIMINATED THAT SETTING THE MOST IMPORTANT !!!!!!!!!!!! YOU ELIMINATED THAT SETTING THE MOST IMPORTANT !!!!!!!!!!!!

when i first logged into my firefox account from my new pc it worked but it didnt have any data like cookies bookmarks passwords i thought i might have logged into a account i dont use but when logged into a alt email i have those didnt have any data either so i deleted the alt account i accidentally opened i logged back into my normal account and shut down my computer since i wanted to leave it for another day

i remembered that i had my firefox account opened on my laptop so i decided to give it another shot turns out i was right the first time with the first email it just didnt sync well when i opened my new computer i saw that i was logged out of my account i tried to sign back in but it kept popping up with the same error every time "unexpected error" since then ive tried countless ways to log back in but it just doesnt seem to work any help would be appreciated

thank you Fis

Can the quantity of tabs ever get so large that finally one more tab wont open? What are the max count of tabs recommended, and when should they be removed to start over?

The new Firefox built-in VPN, rolled out to Australia this week, is not redirecting to the chosen country location.

Despite selecting either US or UK in the country list, websites are still identifying me as located in Australia.

For example, despite VPN being on and US selected, cunard.com still redirects me to my home location of Australia (see https://www.cunard.com/en-au in address bar). Screenshot attached. Other websites similar.

The master password should either pop up right away, or not pop up at all until sensitive information will be accessed. It sometimes pops up on a delay, which is annoying, as I may already be typing something into the URL bar only to find that the second half of what I typed is now into the master password entry.

During this time of delay, I am apparently still able to access web browser functionality. This creates inconsistent protection and makes me question what the master password is protecting. I thought I would only have to enter it before autofill, but entering it at startup implies it protects the entire functionality of the web browser, not just passwords.

But, if it protects the entire functionality of the web browser, then why does it pop up after a delay, which is sometimes long enough for me to have already started to use the browser, meaning that, if my operating system account is shared but my browser is private, someone already could've made a social media post in my name in the time before they are required to enter the master password, if they are fast enough.

Really think about your intention and please establish or make clear your philosophy with this confusing and annoying design choice. Is there a way to either stop the delay, or to make it only pop up when accessing autofill functionality, or to make the browser entirely inaccessible until the pop-up grabs focus?

I HAD TO REINSTALL MY WINDOWS 10. NOW FIREFOX IS TAKING A LONG TIME, IF AT ALL, TO LOAD LINKS FROM MY EMAIL. FIREFOX IS SET AS THE DEFAULT BROWSER. THERE ARE NO ADD-ONS THAT WOULD BLOCK LINKS

Why isn't there a setting to open closed tabs from the history menu in a new tab, rather than overwriting the current tab? This is incredibly frustrating as I just lost a lot of progress on a page that doesn't autosave when I tried to open a tab I had closed a day earlier with information I needed. Is there anyway to do this with config files or something?

how do i now set current tabs

Your new system doesn't allow us to SET CURRENT TABS ON OPENING BROWSER

THIS IS THE MOST IMPORTANT SETTING, BY FAR !!!!