Firefox สำหรับ iOS Community Forum

After the latest update to Firefox for iOS, I can't open pages with an untrusted SSL certificate. It's a blank page. There's no threat prompt that I can accept to proceed (as before). I use Firefox for iOS primarily to log in to Ubiquiti devices on the local network (address: 192.168.x.x). Everything worked fine until recently. Now it doesn't. I cleared the browser cache, disabled security, and that didn't help. I uninstalled and reinstalled the browser, and that didn't help either. Other iOS browsers (e.g., Brave and Safari) work fine—the untrusted certificate prompt appears, and after accepting the threat, the login screen appears. Please help.

Ever since the update to iOS 26.4, I’m unable to access insecure or untrusted sites. I first noticed this when trying to get to some devices on my local network, but I tested an insecure site on the internet and it happened there too. What’s weird is that Safari does still let me access these sites after proceeding through the warning as expected (albeit with a refresh which is new, maybe a bug), but Firefox will just load for a split second and stop.

Just a quick rundown of some additional info:

- Firefox has been updated to the latest version, 149.0. - The local sites are ones I’ve previously given trust to - Firefox has local network access enabled in settings - This also occurs on iPadOS 26.4 - I did some more testing while writing this and it seems intermittent? For example, I have a server with several docker containers, and I can access some of them if I put the port in with the IP but others I can’t. I also have a device that I can get to via hostname but not IP. - I also downloaded Chrome to test things there and I get the “this connection isn’t private” message with the option to proceed anyway, and I’m able to access these sites there.

I’m not sure if this is something on Firefox’s end, Apple’s end, or a combination of the two. Either way, I wanted to see if there was anyone else experiencing this issue or if it’s just me.

Since the recent update 3 days ago I can no longer reach any of my 23 servers with self signed certs locally it just spins.

Works on iPad OS on chrome, Firefox, safari Works on work laptop chrome, Firefox, safari Works on pc chrome, Firefox, safari Works on iOS chrome and safari Does not work on iOS Firefox

I don’t want to have to switch browsers, I am unable to accept the certificate because I cannot reach the page it just spins. Not a network or dns issue read above. I believe the most recent update caused this.

I added a screenshot from relay because standard Firefox just loads forever.

Another thing to note, all http address work fine no issues it’s only https self signed certs and only on IOS (26.4.1)

Starting with iOS 26.4, Firefox for iOS no longer connects to my internal HTTPS website. Safari connects with no problems.

I have a Microsoft Windows Server Active Directory network, and my internal web server is running on Windows Server 2019 Essentials, and uses a self-signed security certificate.

When I try to connect to the web server from my iPhone, all I get is a blank screen. Swiping down to refresh does nothing. I have no problems connecting to any other website with Firefox. As I mentioned earlier, Safari connects to my website with out issue.

Any suggestions?

Thanks.

As a retired American Airlines employee, I use fly.aa.com to book flights. I have been having a cell phone problem for the last year where it says "This connection is untrusted'. Go Back. Says owner of fly.aa.com configured website improperly. Firefox has not connected to this file. If I go there anyway, won't take my passworld. I use this app just fine on my pc at home, but need it to travel. A tech friend helped me go around once, but have not used it lately and it's back to the same screen as noted above. AA says its firefox problem.

Hi all, thanks for volunteering your expertise here. FireFox doesn't allow me to open my printer's configuration home page on my local IP4 network. I failed to find where to add a possible exception for such an address. Error message contains: "This web site might not support the TLS 1.2 protocol, which is the minimum version supported by Firefox."

I don't think my printer/scanner is a significant security risk to me.

Any solutions, other than replacing a perfectly fine printer?

Cheers, Hans

On Firefox browser: 1. The shield next to the URL connection is not secure 2. Googletagmanager has taken over Firefox browser app and Safari app. 3.googletagmanager blocked me from my login on Mozilla account. I had to delete Firefox browser several times but the problem is still there. I want to reinstall Firefox browser app online but it takes me to the Apple store