SUMO community discussions

Firefox 145 for Desktop - Release Notes / Issues / Discussions

  • 20 Replies
  • Last reply by Denys
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  1. philipp
    philipp 1302 posts
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    Firefox 145 is due to be released tomorrow, November 11.

    These links will contain the usual bits of information about the new version once the release is live:

    As always feel free to add to this thread if have note-worthy additions about new features/changes or in case you see common problems popping up with the release as it goes live to more users.

    If you're a user looking for help though, please post in the support forum instead :))

    Firefox 145 is due to be released tomorrow, November 11. These links will contain the usual bits of information about the new version once the release is live: * sumo wiki page: https://wiki.mozilla.org/Support/Firefox145 * release notes: https://www.mozilla.org/firefox/145.0/releasenotes/ * sec advisories: [https://www.mozilla.org/en-US/security/known-vulnerabilities/firefox/#firefox145] * complete list of changes: [https://bugzilla.mozilla.org/buglist.cgi?j_top=OR&f1=target_milestone&o3=equals&v3=Firefox%20145&o1=equals&resolution=FIXED&o2=anyexact&query_format=advanced&f3=target_milestone&f2=cf_status_firefox145&bug_status=RESOLVED&bug_status=VERIFIED&bug_status=CLOSED&v1=mozilla145&v2=fixed%2Cverified&limit=0] * developer notes: [https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Releases/145] As always feel free to add to this thread if have note-worthy additions about new features/changes or in case you see common problems popping up with the release as it goes live to more users. '''If you're a user looking for help though, [https://support.mozilla.org/questions/new please post in the support forum instead] :))'''
  2. James
    James 1688 posts
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    Btw Mozilla has dropped 32-bit Linux support as of Firefox 145.0 and later https://support.mozilla.org/en-US/kb/firefox-has-ended-support-32-bit-linux though it is mentioned in the Firefox 145 Release notes with https://blog.mozilla.org/futurereleases/2025/09/05/firefox-32-bit-linux-support-to-end-in-2026/

    Btw Mozilla has dropped 32-bit Linux support as of Firefox 145.0 and later https://support.mozilla.org/en-US/kb/firefox-has-ended-support-32-bit-linux though it is mentioned in the Firefox 145 Release notes with https://blog.mozilla.org/futurereleases/2025/09/05/firefox-32-bit-linux-support-to-end-in-2026/

    Modified by James on

  3. Denys
    Denys 101 posts
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    We have many questions about why WhatsApp Web does not load in Firefox (though some of them are clearly spam), and many questions about updating Firefox with Linux UAs (and for some reason Fx 60/113). This may be related to the above

    We have many questions about why WhatsApp Web does not load in Firefox (though some of them are clearly spam), and many questions about updating Firefox with Linux UAs (and for some reason Fx 60/113). This may be related to the above

    Modified by Denys on

  4. Denys
    Denys 101 posts
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    (and may be just a spam attack, so I would suggest treating the questions with caution)

    (and may be just a spam attack, so I would suggest treating the questions with caution)

    Modified by Denys on

  5. James
    James 1688 posts
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    The common reason for people posting with specific old versions of Firefox on Linux is due to their version of Linux distro being made eol in package updates support. Their only main options for updates is to install a currently support version of their Linux distro or another one or use the Firefox Linux tarballs from Mozilla as they get internal updates from Mozilla.

    I would say this has nothing to do with the 32-bit Linux support being dropped as of Firefox 145.0.

    I'm guessing WhatsApp Web recently made it so you need a more current version of Firefox and people are not realizing they had old versions of Firefox on Linux and Windows.

    The common reason for people posting with specific old versions of Firefox on Linux is due to their version of Linux distro being made eol in package updates support. Their only main options for updates is to install a currently support version of their Linux distro or another one or use the Firefox Linux tarballs from Mozilla as they get internal updates from Mozilla. I would say this has nothing to do with the 32-bit Linux support being dropped as of Firefox 145.0. I'm guessing WhatsApp Web recently made it so you need a more current version of Firefox and people are not realizing they had old versions of Firefox on Linux and Windows.
  6. James
    James 1688 posts
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    Denys said

    (and may be just a spam attack, so I would suggest treating the questions with caution)

    Probably not spam though the most common combination I have seen so far for Windows is Firefox 62.0 on Windows 8 and Firefox 60.0on Windows 10.

    ''Denys [[#post-89651|said]]'' <blockquote> (and may be just a spam attack, so I would suggest treating the questions with caution) </blockquote> Probably not spam though the most common combination I have seen so far for Windows is Firefox 62.0 on Windows 8 and Firefox 60.0on Windows 10.
  7. Konstantina Papadea
    Konstantina Papadea 59 posts Mozilla Staff
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    Denys said

    We have many questions about why WhatsApp Web does not load in Firefox (though some of them are clearly spam), and many questions about updating Firefox with Linux UAs (and for some reason Fx 60/113). This may be related to the above

    Denys can you provide examples of the questions for the whatsapp incident? We want to ensure we understand if there is a bug related to this

    ''Denys [[#post-89650|said]]'' <blockquote> We have many questions about why WhatsApp Web does not load in Firefox (though some of them are clearly spam), and many questions about updating Firefox with Linux UAs (and for some reason Fx 60/113). This may be related to the above </blockquote> Denys can you provide examples of the questions for the whatsapp incident? We want to ensure we understand if there is a bug related to this
  8. Denys
    Denys 101 posts
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    Hi everyone,

    We are most likely dealing with a massive spam attack. Currently, the related questions mention:

    • Firefox update
    • WhatsApp Web issues
    • chase.com (Chase bank) issues

    and have weird UAs.

    I've deactivated a bunch of clearly spam accounts, but there are much more (as typically there's a separate account for every question). I've replied to all the related questions that haven't received answers yet, mostly with the Incomplete question common response.

    PS And for contributors reading this: don't worry, we'll handle it 💫

    Hi everyone, We are most likely dealing with a massive spam attack. Currently, the related questions mention: * Firefox update * WhatsApp Web issues * chase.com (Chase bank) issues and have weird UAs. I've deactivated a bunch of clearly spam accounts, but there are much more (as typically there's a separate account for every question). I've replied to all the related questions that haven't received answers yet, mostly with the Incomplete question common response. PS And for contributors reading this: don't worry, we'll handle it 💫
  9. jscher2000 - Support Volunteer
    jscher2000 - Support Volunteer 834 posts
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    On a separate note, some users are reported that clicking at the top of the screen in a maximized window no longer clicks the tab, there seems to be an extra row of pixels there. The following Reddit reply mentions are bug and possible preference flip to address it temporarily:

    https://www.reddit.com/r/firefox/comments/1ov8tt9/firefox_145_added_an_annoying_ribbon_on_top_of_my/nohwqz5/

    This may be another manifestation of bug 1993474. Does setting the pref "widget.windows.windowsappsdk.enabled" to false make this go away?
    On a separate note, some users are reported that clicking at the top of the screen in a maximized window no longer clicks the tab, there seems to be an extra row of pixels there. The following Reddit reply mentions are bug and possible preference flip to address it temporarily: https://www.reddit.com/r/firefox/comments/1ov8tt9/firefox_145_added_an_annoying_ribbon_on_top_of_my/nohwqz5/ <blockquote>This may be another manifestation of [https://bugzilla.mozilla.org/show_bug.cgi?id=1993474 bug 1993474]. Does setting the pref "widget.windows.windowsappsdk.enabled" to false make this go away?</blockquote>
  10. Denys
    Denys 101 posts
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    jscher2000 - Support Volunteer said

    On a separate note, some users are reported that clicking at the top of the screen in a maximized window no longer clicks the tab, there seems to be an extra row of pixels there.

    I've also seen a couple of reports about missing Menu Bar, not sure how widespread it is and if it's related.

    ''jscher2000 - Support Volunteer [[#post-89662|said]]'' <blockquote> On a separate note, some users are reported that clicking at the top of the screen in a maximized window no longer clicks the tab, there seems to be an extra row of pixels there. </blockquote> I've also seen a couple of reports about missing Menu Bar, not sure how widespread it is and if it's related.
  11. James
    James 1688 posts
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    Denys said

    The chase threads were mainly with Firefox 115 ESR users on Windows 7, 8, 8.1 and macOS 10.12, 10.13, 10.14 OS users not being able to login though.

    edit: looks like Chase is looking for Firefox 138.0 ? and later to login.

    ''Denys [[#post-89660|said]]'' <blockquote> * chase.com (Chase bank) issues </blockquote> The chase threads were mainly with Firefox 115 ESR users on Windows 7, 8, 8.1 and macOS 10.12, 10.13, 10.14 OS users not being able to login though. edit: looks like Chase is looking for Firefox 138.0 ? and later to login.

    Modified by James on

  12. James
    James 1688 posts
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    Konstantina Papadea said

    Denys said
    We have many questions about why WhatsApp Web does not load in Firefox (though some of them are clearly spam), and many questions about updating Firefox with Linux UAs (and for some reason Fx 60/113). This may be related to the above

    Denys can you provide examples of the questions for the whatsapp incident? We want to ensure we understand if there is a bug related to this

    The WhatsApp web questions may potentially be legitimate as a couple accounts posted a image showing the site says it "Works with Firefox 115+" like in /questions/1546646 as that may mean Fx 116.0 and later. I have seen at least one Firefox 115esr user have a question about the WhatsApp web site.
    ''Konstantina Papadea [[#post-89658|said]]'' <blockquote> ''Denys [[#post-89650|said]]'' <blockquote> We have many questions about why WhatsApp Web does not load in Firefox (though some of them are clearly spam), and many questions about updating Firefox with Linux UAs (and for some reason Fx 60/113). This may be related to the above </blockquote> Denys can you provide examples of the questions for the whatsapp incident? We want to ensure we understand if there is a bug related to this </blockquote> The WhatsApp web questions may potentially be legitimate as a couple accounts posted a image showing the site says it "Works with Firefox 115+" like in [/questions/1546646] as that may mean Fx 116.0 and later. I have seen at least one Firefox 115esr user have a question about the WhatsApp web site.
  13. Denys
    Denys 101 posts
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    The only thing it was the same mobile screenshot in 3 different questions in Firefox Desktop Forum.

    The only thing it was the same mobile screenshot in 3 different questions in Firefox Desktop Forum.
  14. James
    James 1688 posts
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    Good point in that the images of "Work with Firefox 115.0+" was by a mobile user in desktop Firefox forum.

    As perhaps many of these posters are not good with English (as It is most popular in countries like India, Brazil, and Indonesia), they may not realize they should post in the Android Firefox or Firefox for iOS/iPadOS forums. Since they had old desktop Firefox versions it is likely safe to say the Firefox versions they had on their phones were rather old too and perhaps WhatsApp web recently made it so users needed to use a newer version (Firefox 115.0+) which can explain the sudden large amount of threads on this.

    edit: A thought occurred to me, in countries like India, Brazil, and Indonesia these could be people posting at internet cafes and such which may explain the similar old desktop Firefox versions being used in many threads.

    Good point in that the images of "Work with Firefox 115.0+" was by a mobile user in desktop Firefox forum. As perhaps many of these posters are not good with English (as It is most popular in countries like India, Brazil, and Indonesia), they may not realize they should post in the Android Firefox or Firefox for iOS/iPadOS forums. Since they had old desktop Firefox versions it is likely safe to say the Firefox versions they had on their phones were rather old too and perhaps WhatsApp web recently made it so users needed to use a newer version (Firefox 115.0+) which can explain the sudden large amount of threads on this. edit: A thought occurred to me, in countries like India, Brazil, and Indonesia these could be people posting at internet cafes and such which may explain the similar old desktop Firefox versions being used in many threads.

    Modified by James on

  15. Denys
    Denys 101 posts
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    Hey folks,

    We may have an issue with Full Screen Mode when a thin strip remains between the Firefox window and the screen edge:

    I have asked the reporters for additional details and hope to get Bugzilla reports. If you see anything similar, please try to get as much useful info as possible and share a link to the question here.

    I would also suggest moving the related questions to Browser appearance, but feel free to suggest alternatives.

    Hey folks, We may have an issue with Full Screen Mode when a thin strip remains between the Firefox window and the screen edge: * [/questions/1547326] * [/questions/1547608] * [/questions/1547497] * [/questions/1547472] * [/questions/1548197] * possibly (but not necessarily) related [/questions/1547577] I have asked the reporters for additional details and hope to get Bugzilla reports. If you see anything similar, please try to get as much useful info as possible and share a link to the question here. I would also suggest moving the related questions to Browser appearance, but feel free to suggest alternatives.

    Modified by Denys on

  16. TyDraniu
    TyDraniu 163 posts
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    This is Bug 1993474 - On an external monitor in a maximized Firefox window, can't select a tab with the cursor at the top of the screen.

    This is [https://bugzilla.mozilla.org/show_bug.cgi?id=1993474 Bug 1993474 - On an external monitor in a maximized Firefox window, can't select a tab with the cursor at the top of the screen].
  17. Denys
    Denys 101 posts
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    TyDraniu said

    This is Bug 1993474 - On an external monitor in a maximized Firefox window, can't select a tab with the cursor at the top of the screen.

    Thank you, that makes sense! Hope we'll get it fixed

    ''TyDraniu [[#post-89700|said]]'' <blockquote> This is [https://bugzilla.mozilla.org/show_bug.cgi?id=1993474 Bug 1993474 - On an external monitor in a maximized Firefox window, can't select a tab with the cursor at the top of the screen]. </blockquote> Thank you, that makes sense! Hope we'll get it fixed

    Modified by Denys on

  18. James
    James 1688 posts
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    James said

    Konstantina Papadea said
    Denys said
    We have many questions about why WhatsApp Web does not load in Firefox (though some of them are clearly spam), and many questions about updating Firefox with Linux UAs (and for some reason Fx 60/113). This may be related to the above

    Denys can you provide examples of the questions for the whatsapp incident? We want to ensure we understand if there is a bug related to this

    The WhatsApp web questions may potentially be legitimate as a couple accounts posted a image showing the site says it "Works with Firefox 115+" like in /questions/1546646 as that may mean Fx 116.0 and later. I have seen at least one Firefox 115esr user have a question about the WhatsApp web site.

    Btw here is a screenshot a Firefox 113.0.2 user on Linux /questions/1547990 posted to show it is indeed on desktop Firefox also with the WhatsApp web site if they are using a version older than 115.0.

    ''James [[#post-89672|said]]'' <blockquote> ''Konstantina Papadea [[#post-89658|said]]'' <blockquote> ''Denys [[#post-89650|said]]'' <blockquote> We have many questions about why WhatsApp Web does not load in Firefox (though some of them are clearly spam), and many questions about updating Firefox with Linux UAs (and for some reason Fx 60/113). This may be related to the above </blockquote> Denys can you provide examples of the questions for the whatsapp incident? We want to ensure we understand if there is a bug related to this </blockquote> The WhatsApp web questions may potentially be legitimate as a couple accounts posted a image showing the site says it "Works with Firefox 115+" like in [/questions/1546646] as that may mean Fx 116.0 and later. I have seen at least one Firefox 115esr user have a question about the WhatsApp web site. </blockquote> Btw here is a screenshot a Firefox 113.0.2 user on Linux [/questions/1547990] posted to show it is indeed on desktop Firefox also with the WhatsApp web site if they are using a version older than 115.0.

    Modified by James on

  19. Denys
    Denys 101 posts
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    Hey folks,

    We have an incident with the Desktop Launcher failing to start on Windows 10 old builds. See our wiki page for details.

    Hey folks, We have an incident with the Desktop Launcher failing to start on Windows 10 old builds. See our [https://wiki.mozilla.org/Support/Firefox145#Known_incidents wiki page] for details.
  20. Kiki
    Kiki 1701 posts Mozilla Staff
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    Denys said

    Hey folks, We have an incident with the Desktop Launcher failing to start on Windows 10 old builds. See our wiki page for details.

    Thanks for sharing the info here and added it to the wiki, Denys (:

    ''Denys [[#post-89711|said]]'' <blockquote> Hey folks, We have an incident with the Desktop Launcher failing to start on Windows 10 old builds. See our [https://wiki.mozilla.org/Support/Firefox145#Known_incidents wiki page] for details. </blockquote> Thanks for sharing the info here and added it to the wiki, Denys (:
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