Firefox Community Forum

On Windows 10 with 64-bit Firefox, after updating from version 144 to 145, some local HTTP-only servers stopped working and became inaccessible. When I enter http://<local server name>, after a few seconds it automatically changes to https://<local server name>, and since no HTTPS service is running, it ends with a “Server not found” page. It seems to be related to DNS — accessing http://<IP address> works fine.

I tried a clean installation with a new user profile, but it didn’t help. Downgrading to version 144 fixes the problem, but at the cost of losing the user profile (which is a disaster). I also tried to check the HTTP-only settings (which I’ve never modified), but that didn’t help either.

Is anyone else experiencing the same issue?

duplicate of /questions/1556684 thread in correct section

I have already installed Firefox when I try to download extensions redirects me App Store it shows open please fix problem any suggestions thanks

duplicate of /questions/1558885 thread

I just bought a new computer. How do I sync firefox on my old computer with firefox on my new computer. The same for thunderbird mail. Please help. I am not a computer genius. Dave Muran [edited email and phone# from public community support forum)

duplicate of /questions/1546750 thread

In this version, do I still have another account and password from other application that already saved before in the past version?

duplicate of /questions/1549163 thread as it has a reply.

Today as I got to work (Windows 11 machine), I had a suspicious Firefox.exe file on my Desktop, it was not a shortcut, but exe file. I did a little investigation and research, and I noticed some difference from Program Files exe file and Firefox.exe on my Desktop:

C:\Program Files\Mozilla Firefox\firefox.exe

Size: 695424 bytes SHA-256 hash: EEB242895F8ED48B43EAAA9ECA06C6DDE54425F8AE0E16200D2D46F839B9A540 File version: 145.0.0.327 Copyright: ©Firefox and Mozilla Developers Date modified: 16.11.2025 12:35 Original filename: firefox.exe Digital Signature: Mozilla Corporation

and Firefox.exe that appeared on Desktop

C:\Users\User\Desktop\Firefox.exe

Size: 389248 bytes SHA-256 hash: E8DA5735FE1B5E92BA3636B8D17B5BEC0EA521DB6A8B5A52177FF3E8B2F60710 File version: 145.0.0.327 Copyright: Licence: MPL 2 Date modified: 16.11.2025 12:35 Original filename: desktop-launcher.exe Digital Signature: Mozilla Corporation

I scanned both files in VirusTotal, and they both seems clean and legit

I uploaded both files to:

https://drive.google.com/file/d/1kALgQbfhIpHqs1pN6dmTdF71nm10LlD-/view?usp=sharing

Can somebody assure me that both files are OK, and can somebody explain to me why Firefox.exe appeared on my Desktop, and why is there difference between two files in size, Copyright info, and original filename ?

duplicate of /questions/1555123 thread

Every time I do a search it takes me to a virus warning anad won't go further.

More of a comment. Firefox is the only browser I have used. Love it! Many important bookmarks to easily navigate. Broser update messed up bookmarks and took me hours to get back! Found. Save key and/or password! Learned a lot about profiles and Firefox along the way. Ugh!

duplicate of /questions/1495342 thread

I try to install Firefox directly from the Mozilla repository.

For that, I read the article "Install Firefox on Linux" and followed the install instructions in first chapter "Debian-based distributions" step-by-step. (article https://support.mozilla.org/en-US/kb/install-firefox-linux)

Unfortunately, with every attempt to install Firefox, the Firefox LinuxMint (Ubundu) package will be still installed. The command to priorise the Mozilla repository seems to have no influenace.

How can I prevent/avoid using the LinuxMint/Ubundu repository? I wan't to install and update Firefox direct from Mozilla source.

I'm using Linux Mint 22.1 Xia base (Ubuntu 24.04 noble)

Hi,

Firefox starts when computer starts.

I read this https://support.mozilla.org/en-US/kb/firefox-starts-automatically-when-i-restart-window

worked in the past, now doesn' t work; if I repet operation I find that variable at false value, and firefox autostarts...

If you have solutions, or I do something wrong, tell me...

Thank you !

Hello, maybe someone else seen the same issue. When trying to establish a webrtc connection with the Firefox browser, my server sends a following message (video H264): ``` 0:00:01.701967159 90 0x7fc2a0002030 LOG webrtcsrc-signaller net/webrtc/src/signaller/imp.rs:172:gstrswebrtc::signaller::imp::Signaller::connect::{{closure}}::{{closure}}: Sending websocket message Peer(PeerMessage { session_id: "56a17f8d-2585-4d4b-9f2e-3009450a19e9", peer_message: Sdp(Offer { sdp: "v=0\r\no=- 9144757257615355393 0 IN IP4 0.0.0.0\r\ns=-\r\nt=0 0\r\na=ice-options:trickle\r\na=group:BUNDLE video0 audio1 application2\r\nm=video 9 UDP/TLS/RTP/SAVPF 96 98 99 100 101\r\nc=IN IP4 0.0.0.0\r\na=setup:actpass\r\na=ice-ufrag:uOJFtPAyRCKX4NDQcU3VExzLsFcfCWYc\r\na=ice-pwd:jRots1p0FnmxmwLoVqAq7lK84rAwBk/4\r\na=rtcp-mux\r\na=rtcp-rsize\r\na=sendonly\r\na=rtpmap:96 H264/90000\r\na=rtcp-fb:96 nack\r\na=rtcp-fb:96 nack pli\r\na=rtcp-fb:96 ccm fir\r\na=rtcp-fb:96 transport-cc\r\na=fmtp:96 packetization-mode=1;profile-level-id=42001f;level-asymmetry-allowed=1\r\na=rtpmap:98 red/90000\r\na=rtpmap:99 ulpfec/90000\r\na=rtpmap:100 rtx/90000\r\na=fmtp:100 apt=96\r\na=rtpmap:101 rtx/90000\r\na=fmtp:101 apt=98\r\na=ssrc-group:FID 2834502081 1415006916\r\na=ssrc:2834502081 msid:user1488703113@host-437c139 webrtctransceiver0\r\na=ssrc:2834502081 cname:user1488703113@host-437c139\r\na=ssrc:1415006916 msid:user1488703113@host-437c139 webrtctransceiver0\r\na=ssrc:1415006916 cname:user1488703113@host-437c139\r\na=mid:video0\r\na=fingerprint:sha-256 9E:33:DF:EB:63:72:42:77:49:8D:0C:0E:FC:61:51:C1:56:53:AF:05:D9:F7:61:8F:95:DD:7D:FF:99:1A:64:E8\r\na=rtcp-mux-only\r\nm=audio 0 UDP/TLS/RTP/SAVPF 97\r\nc=IN IP4 0.0.0.0\r\na=setup:actpass\r\na=ice-ufrag:uOJFtPAyRCKX4NDQcU3VExzLsFcfCWYc\r\na=ice-pwd:jRots1p0FnmxmwLoVqAq7lK84rAwBk/4\r\na=bundle-only\r\na=rtcp-mux\r\na=rtcp-rsize\r\na=sendonly\r\na=rtpmap:97 OPUS/48000/2\r\na=rtcp-fb:97 transport-cc\r\na=fmtp:97 sprop-stereo=1;sprop-maxcapturerate=48000\r\na=ssrc:1127273264 msid:user1488703113@host-437c139 webrtctransceiver1\r\na=ssrc:1127273264 cname:user1488703113@host-437c139\r\na=mid:audio1\r\na=fingerprint:sha-256 9E:33:DF:EB:63:72:42:77:49:8D:0C:0E:FC:61:51:C1:56:53:AF:05:D9:F7:61:8F:95:DD:7D:FF:99:1A:64:E8\r\na=rtcp-mux-only\r\nm=application 0 UDP/DTLS/SCTP webrtc-datachannel\r\nc=IN IP4 0.0.0.0\r\na=setup:actpass\r\na=ice-ufrag:uOJFtPAyRCKX4NDQcU3VExzLsFcfCWYc\r\na=ice-pwd:jRots1p0FnmxmwLoVqAq7lK84rAwBk/4\r\na=bundle-only\r\na=mid:application2\r\na=sctp-port:5000\r\na=fingerprint:sha-256 9E:33:DF:EB:63:72:42:77:49:8D:0C:0E:FC:61:51:C1:56:53:AF:05:D9:F7:61:8F:95:DD:7D:FF:99:1A:64:E8\r\n" }) }) ``` and Firefox responds with VP8 inactive message: ``` 0:00:02.007638187 90 0x7fc2a0002030 TRACE webrtcsrc-signaller net/webrtc/src/signaller/imp.rs:324:gstrswebrtc::signaller::imp::Signaller::handle_message:<GstWebRTCSignaller@0x563ce91ed190> Received message {"type": "peer", "sessionId": "56a17f8d-2585-4d4b-9f2e-3009450a19e9", "sdp": {"type": "answer", "sdp": "v=0\r\no=mozilla...THIS_IS_SDPARTA-99.0 2114996636650547664 0 IN IP4 0.0.0.0\r\ns=-\r\nt=0 0\r\na=sendrecv\r\na=fingerprint:sha-256 16:EC:66:ED:36:A1:D4:E0:CB:95:24:4A:E2:40:CA:53:E5:AB:D5:FF:F5:9C:5C:81:EB:83:F8:E4:BD:89:9F:03\r\na=ice-options:trickle\r\na=msid-semantic:WMS *\r\nm=video 0 UDP/TLS/RTP/SAVPF 120\r\nc=IN IP4 0.0.0.0\r\na=inactive\r\na=mid:video0\r\na=rtpmap:120 VP8/90000\r\nm=audio 9 UDP/TLS/RTP/SAVPF 97\r\nc=IN IP4 0.0.0.0\r\na=recvonly\r\na=fmtp:97 maxplaybackrate=48000;stereo=1;useinbandfec=1\r\na=ice-pwd:d5a493a07b92e452116a851e083e1c78\r\na=ice-ufrag:721f69a3\r\na=mid:audio1\r\na=rtcp-mux\r\na=rtpmap:97 opus/48000/2\r\na=setup:active\r\na=ssrc:3561002322 cname:{bb14ec44-0966-49c0-bccb-5e6242dd83d7}\r\nm=application 9 UDP/DTLS/SCTP webrtc-datachannel\r\nc=IN IP4 0.0.0.0\r\na=sendrecv\r\na=ice-pwd:d5a493a07b92e452116a851e083e1c78\r\na=ice-ufrag:721f69a3\r\na=mid:application2\r\na=setup:active\r\na=sctp-port:5000\r\na=max-message-size:1073741823\r\n"}} ``` which leads to: ``` 0:00:02.007849785 90 0x7fc2a0002030 WARN webrtcsink net/webrtc/src/webrtcsink/imp.rs:3238:gstrswebrtc::webrtcsink::imp::BaseWebRTCSink::handle_sdp_answer: consumer from session 56a17f8d-2585-4d4b-9f2e-3009450a19e9 refused media 0: Some("m=video 0 UDP/TLS/RTP/SAVPF 120\r\nc=IN IP4 0.0.0.0\r\na=inactive\r\na=mid:video0\r\na=rtpmap:120 VP8/90000\r\n") ``` and a connection close.

Why Firefox could respond with VP8 to the H264 request?

We hate this useless so-called feature and you've completely failed to give us an OFF switch! It's been many months with countless complaints and still no OFF switch! We've had this conversation before, all of your ideas must come with an OFF switch, especially so for the dumb ones like tab pinning! You don't ever force this dumb crap on us, ever!

Where is the fkin OFF switch already!?!?!?