Prime Video freezes or shows “Video unavailable” in Firefox on Mac

Hi, I’m having trouble playing Prime Video in Firefox on my 2023 MacBook Pro. The video freezes, or I get a “Video unavailable” message. It happens both on primevideo.com… (read more)

Hi, I’m having trouble playing Prime Video in Firefox on my 2023 MacBook Pro. The video freezes, or I get a “Video unavailable” message. It happens both on primevideo.com and when I open Prime Video from Amazon’s website.

Prime Video plays normally in Safari on the same Mac. In Firefox, I’ve tried restarting my Mac and router, turning off my VPN, testing in a Private Window and Troubleshoot Mode, and updating Firefox. “Play DRM-controlled content” is enabled, and Widevine Content Decryption Module is listed and enabled. I also found that media.eme.enabled was set to false and changed it to true, but the problem remains.

Could you help me determine why Prime Video won’t play in Firefox and what I should try next?

Firefox version: Version 158.0 (64-bit) macOS version: Sequoia 15.8.1

Thanks so much.

Open

Listing thumbnails in Autoindex with Firefox versus Internet Explorer

Hello, To test Firefox I made a pictures folder with Autoindex (github.com/beitdina/Autoindex) and uploaded some pictures. All the pictures have a thumbnail with MSIE and… (read more)

Hello,

To test Firefox I made a pictures folder with Autoindex (github.com/beitdina/Autoindex) and uploaded some pictures. All the pictures have a thumbnail with MSIE and the properties go for example at https://beitdina.net/pictures/index.php?thumbnail=./FB_IMG_1746824252688.jpg but with Firefox the some thumbnails are not generated and a "Thumbnail of" alternative text displays alike with Chrome and Chromium, etc.

I forgot to add something to "Autoindex" or is from the hosting server or is the browser ?

10x

Open 1

On a Macpro Air, how does one cast a movie to smart tv using Firefox?

I am using the Firefox browser to watch movies that I would like to project wirelessly to my LG Web OS TV. I do not see any tool in settings or your browser's menu that … (read more)

I am using the Firefox browser to watch movies that I would like to project wirelessly to my LG Web OS TV. I do not see any tool in settings or your browser's menu that allows me to do this. Google browsers do allow this as well as Edge and Bing. Is there a way to do this on Firefox.

Open

Shortcut icons are missing from my Firefox homepage

I always use C Cleaner to clear unneeded my unneeded data once a month. It does not usually affect my Firefox shortcuts on the Firefox homepage. It was also after Firefo… (read more)

I always use C Cleaner to clear unneeded my unneeded data once a month. It does not usually affect my Firefox shortcuts on the Firefox homepage. It was also after Firefox had updated to version 158.0 . I did this on Wednesday (14th October) and all of my pinned Firefox shortcuts have gone missing. They have not come back, and no other shortcuts are being shown after I have since visited any websites. What has happened to them? Will this be corrected? Regards John

Open 4 1

Les themes contrastés de Windows 11 26H2 désactive la page d'acceuil personalisée de Firefox 158

Bonjour, J'utilise le thème sombre avec Windows 11 depuis longtemps. Lorsque j'ai activé les thèmes contrastés (Aquatique, Crépuscule, Ciel nocturne et Desert ) avec Wind… (read more)

Bonjour, J'utilise le thème sombre avec Windows 11 depuis longtemps. Lorsque j'ai activé les thèmes contrastés (Aquatique, Crépuscule, Ciel nocturne et Desert ) avec Windows 11 26H2, Firefox 158 s'est retrouvé avec ma page d’accueil personnalisée désactivée. J'ai essayer de la reparamétrée mais impossible : la page reste juste avec le nom Firefox et le champ de recherche sans le bouton de personaliser. J'ai l’extension "Dark Reader" qui s'est aussi désactivé. Tout est revenu à la normale après désactivation des thèmes contrastés. Cordialement.

Open 1

Newest Mozilla Firefox

Just want to thank you folks at Mozilla for causing a complete hard drive failure installing your newest version of Firefox. I’ve used FF for many years and this is the f… (read more)

Just want to thank you folks at Mozilla for causing a complete hard drive failure installing your newest version of Firefox. I’ve used FF for many years and this is the first issue I’ve ever experienced. This new browser is so intrusive it crashed my computer and caused a no boot situation! I lost all my personal files due to this! This browser doesn’t need all the customizable bullshit offered! Thanks for effing up my system and causing major issues now to try to recover my most important files. I’ll be using TOR straight out now! Bunch of bullshit!!

Open

How to add previous profile to new version of firefox

Once again the latest firefox browser has issues so I rolled back the last stable version. It keeps prompting me to create a new profile. I want to use the previous profi… (read more)

Once again the latest firefox browser has issues so I rolled back the last stable version. It keeps prompting me to create a new profile. I want to use the previous profile that has all my setting and bookmarks. I got to about:profiles and selected the profile i want to make default and it will not add it to firefox. How can I do this?

Open 1

Scrollbars in bookmarks library play hide 'N seek

This may be an old problem. In Linux, in bookmarks library, the scrollbar thumbs behave differently than in browser web pages. Even in new profile. This isn't a new iss… (read more)

This may be an old problem. In Linux, in bookmarks library, the scrollbar thumbs behave differently than in browser web pages. Even in new profile. This isn't a new issue for v157. Same behavior in any theme (any Fx themes, and / or diff 'Nix system themes).

I set scrollbars to disappear when not used or being hovered. On sites, when hover scrollbar area, they reappear. AND while pointer is over the track or thumb, it remains visible - does not reduce to an unusable width or disappear completely. As I think it should.

But in bookmarks library, the track & thumb disappear, even w/ pointer hovered, unless thumb is grabbed immediately. Even grabbing thumb & move it, then pause a fraction of second (still gripping thumb w/ L mouse button), the thumb & track STILL disappear. As long as you don't release grip (on now invisible thumb / track) they reappear when move pointer.

The bookmark library scrollbar behavior is also erratic. How long you have to grab it, when you 1st hover it. If you accidentally move pointer from folder pane, past vertical divider into bookmark pane, then left - back into folder pane, the scrollbar doesn't appear.

You have to move pointer well left of scrollbar, then approach it from the R, to make it reappear. It doesn't have any of this behavior in the browser (never has, AFAIK).

Open

all side

Subject: Pornographic Websites Appear to Be Blocked in Firefox on Android Hello Mozilla Support Team, I am using Firefox on an Android phone, and I am experiencing an iss… (read more)

Subject: Pornographic Websites Appear to Be Blocked in Firefox on Android

Hello Mozilla Support Team,

I am using Firefox on an Android phone, and I am experiencing an issue where pornographic websites appear to be blocked or are not accessible through the browser.

I would appreciate your help in understanding why this is happening and whether the issue is related to Firefox settings, security features, or another possible cause.

Could you please provide step-by-step instructions to help me identify and resolve the issue?

Thank you for your time and assistance.

Best regards.

Open 2

Firefox ESR 153.5.0 on Mac reports IndexedDB directory-lock errors, causing multiple websites and MetaMask to fail in my original profile, even in Troubleshoot Mode.

Subject: Firefox ESR 153.5.0 — IndexedDB errors, multiple websites failing, MetaMask unable to start Hello Mozilla Support, I'm experiencing serious problems with Firefox… (read more)

Subject: Firefox ESR 153.5.0 — IndexedDB errors, multiple websites failing, MetaMask unable to start

Hello Mozilla Support, I'm experiencing serious problems with Firefox on my Mac and would appreciate help identifying the cause and finding a safe solution. I'm running Firefox ESR 153.5.0 (aarch64). Several unrelated websites have stopped functioning properly in my original Firefox profile: • Yahoo Mail: My inbox appears momentarily, then disappears and displays an error message. • Emory MyChart: The login page fails to load properly. • ChatGPT: The site doesn't fully load, including my conversation history. • MetaMask: My wallet extension fails to start, displaying an error indicating that an operation failed for reasons unrelated to the database itself. These websites work in Chrome. Troubleshooting completed: 1. Confirmed Firefox is up to date and JavaScript is enabled. 2. Disabled Enhanced Tracking Protection and cleared Yahoo-specific cookies and site data, without success. 3. Created a separate Firefox TEST profile. The affected websites load successfully in that profile. 4. Examined the Browser Console in my original profile and found multiple IndexedDB errors reporting: UnknownError — Directory Lock Failed — ActorsParent.cpp:15521 5. Confirmed that these errors persist even when the TEST profile is closed. 6. Restarted Firefox in Troubleshoot Mode, with extensions temporarily disabled. Yahoo Mail continued to fail in exactly the same way. Possible relevance of the recent Firefox update I understand that Firefox ESR 153.5.0 was released recently and included changes relating to IndexedDB. Could these changes be related to the problems I'm experiencing, or could there be an existing storage issue affecting my original profile? My primary concern is MetaMask. I have made a backup copy of my original Firefox profile folder, but I want to avoid any repair procedure that might delete or compromise my wallet's locally stored information. Before attempting a Firefox Refresh, profile reset, extension reinstallation, or storage cleanup, I would appreciate guidance on: • What might cause these IndexedDB directory-lock failures? • Whether Firefox has a diagnostic or repair procedure that could address them without deleting extension data. • Whether this is a known issue with the recent ESR release.

Please know I'm comfortable following step-by-step instructions but am not technically experienced.

Thank you very much for your assistance. I will be most grateful.

Open

firefox dont support open in background with reeder(feed app)

In previous versions, this feature supported background operation; however, since the latest update, opening an article in Reeder immediately triggers the browser to laun… (read more)

In previous versions, this feature supported background operation; however, since the latest update, opening an article in Reeder immediately triggers the browser to launch. Could you please check this in Firefox and restore the previous, more convenient behavior? Having the browser pop up every single time leads to unnecessary switching between tabs.

Open

How do I delete this error code that I get each time I start my laptop? http://"c/Program%20Files/Mozilla%20Firefox/firefox.exe%22%20-new-window%20https://mail.yahoo.com/

Each time I power up my laptop I want my page to go straight to my Yahoo Mail. It does do that but it also tries to open another page that errors out. I think its because… (read more)

Each time I power up my laptop I want my page to go straight to my Yahoo Mail. It does do that but it also tries to open another page that errors out. I think its because there's a 'c in the address and the file can't be found. I don't know how that filename got written into the Start Up Program and I can't find it to remove it. Please tell me like a First Grader how to remove this error message.

http://"c/Program%20Files/Mozilla%20Firefox/firefox.exe%22%20-new-window%20https://mail.yahoo.com/

It says it cannot open the page.

Thank you for any help you can offer.

[redacted email from public]

Open

System not accepting the password for changing my email address

I have been trying for 2 days to change my account default email address. The system gets as far as me typing in the password sent to my current default email address. I… (read more)

I have been trying for 2 days to change my account default email address. The system gets as far as me typing in the password sent to my current default email address. I then click on the submit button and nothing happens! This has happened 8 times now. After using Firefox as my browser for +-15years, I am very disappointed by the lack of access to a human voice. If I do not hear back from you I will change to Microsoft Edge as my browser.

Open

Amazon Prime Video website don't work in new Fierefox Release

Hello, I installed the Firefox 158.8 update on my iMac (macOS Sequoia 15.8.1) today. All websites are working as usual, except for Amazon Prime Video; it loads once and t… (read more)

Hello, I installed the Firefox 158.8 update on my iMac (macOS Sequoia 15.8.1) today. All websites are working as usual, except for Amazon Prime Video; it loads once and then freezes. I can't perform any actions on the page—everything remains unresponsive. I can't enter a different URL in the address bar or reload the page, either. The only thing I can do is close the page. I’ve cleared the cache and disabled ad blockers, but nothing changes. Strangely, this doesn't happen with Firefox on my MacBook. What could the problem be?

regards Burkhard

Open 6 3

Apple Crash Report crashes when opening Firefox; but, before generating a FireFox Crash Report.

Process: crashreporter [1930] Path: /Applications/Firefox.app/Contents/MacOS/crashreporter.app/Contents/MacOS/crashreporter Identifier: … (read more)

Process: crashreporter [1930] Path: /Applications/Firefox.app/Contents/MacOS/crashreporter.app/Contents/MacOS/crashreporter Identifier: org.mozilla.crashreporter Version: 1.0 Code Type: ARM-64 (Native) Role: Unspecified Parent Process: firefox [1875] Coalition: org.mozilla.firefox [1424] Responsible Process: firefox [1875] User ID: 501

Date/Time: 2026-10-15 16:40:02.8902 -0700 Launch Time: 2026-10-15 16:40:02.8144 -0700 Hardware Model: Mac15,14 OS Version: macOS 27.0.1 (26A434) Release Type: User

Crash Reporter Key: 99AF36FD-ABB0-6C7F-D431-8CB88902FCCB Incident Identifier: 8FFD7652-AEB8-449A-83CE-3DFCC27F451A

Time Awake Since Boot: 1500 seconds

System Integrity Protection: enabled

Triggered by Thread: 0 main, Dispatch Queue: com.apple.main-thread

Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000

Termination Reason: Namespace SIGNAL, Code 6, Abort trap: 6 Terminating Process: crashreporter [1930]


Application Specific Information: abort() called


Thread 0 Crashed:: main Dispatch queue: com.apple.main-thread 0 libsystem_kernel.dylib 0x187d99650 __pthread_kill + 8 1 libsystem_pthread.dylib 0x187dd597c pthread_kill + 296 2 libsystem_c.dylib 0x187cd8458 abort + 148 3 crashreporter 0x102339bf4 0x1020f8000 + 2366452 4 crashreporter 0x10233ab1c std::process::abort::hd520a7101c5fdc83 + 12 5 crashreporter 0x102339930 _RNvCs1Y7DaGC1cwg_7___rustc12___rust_abort + 12 6 crashreporter 0x102147b5c _RNvCs1Y7DaGC1cwg_7___rustc18___rust_start_panic + 12 7 crashreporter 0x1023398ec _RNvCs1Y7DaGC1cwg_7___rustc10rust_panic + 16 8 crashreporter 0x1022f2804 std::panicking::panic_with_hook::h657ee82e431041f8 + 648 9 crashreporter 0x1022f245c 0x1020f8000 + 2073692 10 crashreporter 0x1022ee700 std::sys::backtrace::__rust_end_short_backtrace::hbd8bf96e4ee54567 + 12 11 crashreporter 0x1022dd578 _RNvCs1Y7DaGC1cwg_7___rustc17rust_begin_unwind + 32 12 crashreporter 0x10233e8a0 core::panicking::panic_fmt::ha09fb24313daf262 + 40 13 crashreporter 0x10233e62c core::result::unwrap_failed::hfd1628134417d023 + 72 14 crashreporter 0x102119788 0x1020f8000 + 137096 15 crashreporter 0x10212b620 0x1020f8000 + 210464 16 crashreporter 0x10212b5c0 0x1020f8000 + 210368 17 crashreporter 0x1022e6ce0 std::rt::lang_start_internal::h11fc0900699d88c7 + 952 18 crashreporter 0x102147af4 main + 52 19 dyld 0x1879ffe80 start + 6688


Thread 0 crashed with ARM Thread State (64-bit):

   x0: 0x0000000000000000   x1: 0x0000000000000000   x2: 0x0000000000000000   x3: 0x0000000000000000
   x4: 0xffffffff94e393c5   x5: 0x0000000000000005   x6: 0x000000000000000a   x7: 0x000000010240c02f
   x8: 0x752b168d8df13b34   x9: 0x752b168c607ec4b4  x10: 0x0000000000000002  x11: 0x00000000fffffffd
  x12: 0x0000000000000000  x13: 0x0000000000000000  x14: 0x0000000000000000  x15: 0x0000000000000000
  x16: 0x0000000000000148  x17: 0x00000001ef53b518  x18: 0x0000000000000000  x19: 0x0000000000000006
  x20: 0x0000000000000103  x21: 0x00000001ed900060  x22: 0x000000010244f7d0  x23: 0x0000000102459000
  x24: 0x0000000000000002  x25: 0x0000000102b3f120  x26: 0x0000000102b3f0f0  x27: 0x0000000000000041
  x28: 0x0000000000000001   fp: 0x000000016dd06040   lr: 0x0000000187dd597c
   sp: 0x000000016dd06020   pc: 0x0000000187d99650 cpsr: 0x40001000
  far: 0x0000000000000000  esr: 0x56000080 (Syscall)

Binary Images:

      0x1020f8000 -        0x10242ffff org.mozilla.crashreporter (*) <cef71e23-29da-3457-b74a-2f85b7be4a0d> /Applications/Firefox.app/Contents/MacOS/crashreporter.app/Contents/MacOS/crashreporter
      0x187d90000 -        0x187dce9ab libsystem_kernel.dylib (*) <f63bf418-8f75-34a4-aaf1-8caf2b9b6a05> /usr/lib/system/libsystem_kernel.dylib
      0x187dcf000 -        0x187ddb91b libsystem_pthread.dylib (*) <5a1828c3-cbc2-3b85-bd07-c8ed10021a41> /usr/lib/system/libsystem_pthread.dylib
      0x187c5d000 -        0x187cdfca3 libsystem_c.dylib (*) <fba7b23e-aa60-3a90-9aa4-a7a2e0ad63ee> /usr/lib/system/libsystem_c.dylib
      0x1879ce000 -        0x187a8d6e3 dyld (*) <d341ddcb-7969-3a9c-8e03-0cf4751398a9> /usr/lib/dyld
              0x0 - 0xffffffffffffffff ??? (*) <00000000-0000-0000-0000-000000000000> ???

External Modification Summary:

 Calls made by other processes targeting this process:
   task_for_pid: 0
   thread_create: 0
   thread_set_state: 0
 Calls made by this process:
   task_for_pid: 0
   thread_create: 0
   thread_set_state: 0
 Calls made by all processes on this machine:
   task_for_pid: 0
   thread_create: 0
   thread_set_state: 0

VM Region Summary: ReadOnly portion of Libraries: Total=1.9G resident=0K(0%) swapped_out_or_unallocated=1.9G(100%) Writable regions: Total=90.2M written=336K(0%) resident=336K(0%) swapped_out=0K(0%) unallocated=89.9M(100%)

                               VIRTUAL   REGION 

REGION TYPE SIZE COUNT (non-coalesced)

===== ======= =

Deferred Reclaim 64.0M 1 Guard 385.0G 1 Malloc 17.8M 9 Malloc Guard Page 3280K 4 OS Alloc Once 32K 1 Stack 8160K 1 Stack Guard 56.0M 1 Untagged 32K 2 Untagged (reserved) 128K 1 reserved VM address space (unallocated) __AUTH 1988K 218 __AUTH_CONST 33.8M 396 __CTF 824 1 __DATA 6992K 403 __DATA_CONST 23.8M 394 __DATA_DIRTY 2141K 349 __FONT_DATA 2352 1 __LINKEDIT 1.6G 2 __OBJC_RO 118.0M 1 __OBJC_RW 2735K 1 __TEXT 380.0M 468 __TPRO_CONST 132K 4 page table in kernel 336K 1 shared memory 32K 1

===== ======= =

TOTAL 387.3G 2261 TOTAL, minus reserved VM space 387.3G 2261



Full Report


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 "procRole" : "Unspecified",
 "version" : 2,
 "userID" : 501,
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 "modelCode" : "Mac15,14",
 "coalitionID" : 1424,
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 "codeSigningMonitor" : 2,
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 "pid" : 1930,
 "translated" : false,
 "cpuType" : "ARM-64",
 "procLaunch" : "2026-10-15 16:40:02.8144 -0700",
 "procStartAbsTime" : 37390919841,
 "procExitAbsTime" : 37391091016,
 "procName" : "crashreporter",
 "procPath" : "\/Applications\/Firefox.app\/Contents\/MacOS\/crashreporter.app\/Contents\/MacOS\/crashreporter",
 "bundleInfo" : {"CFBundleVersion":"1.0","CFBundleIdentifier":"org.mozilla.crashreporter"},
 "storeInfo" : {"deviceIdentifierForVendor":"D51C22ED-FC6C-5A85-9304-5E841E88696C","thirdParty":true},
 "parentProc" : "firefox",
 "parentPid" : 1875,
 "coalitionName" : "org.mozilla.firefox",
 "crashReporterKey" : "99AF36FD-ABB0-6C7F-D431-8CB88902FCCB",
 "chargingStatus" : {"externalSourceConnected":true},
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 "codeSigningTeamID" : "43AQ936H96",
 "codeSigningFlags" : 570503953,
 "codeSigningValidationCategory" : 6,
 "codeSigningTrustLevel" : 4294967295,
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 "sip" : "enabled",
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 "asi" : {"libsystem_c.dylib":["abort() called"]},
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 "faultingThread" : 0,
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},

 "logWritingSignature" : "8d1ec80450aa430ceb7c82a8dcf5ada3221a774f",
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Model: Mac15,14, BootROM 20457.1.29, proc 28:0:20:8 processors, 96 GB, SMC Graphics: Apple M3 Ultra, Apple M3 Ultra, Built-In Display: Studio Display, 5120 x 2880 Retina, Main, MirrorOff, Online Display: Acer S201HL, 900 x 1600, MirrorOff, Online Display: VX1935wm-3, 1440 x 900 (Widescreen eXtended Graphics Array Plus), MirrorOff, Online Memory Module: LPDDR5, Hynix AirPort: spairport_wireless_card_type_wifi (0x14E4, 0x4388), wl0: Jul 2 2026 01:06:10 version 23.10.1039.0.41.51.239 FWID 01-40b8d11f IO80211_driverkit-1585.80 "IO80211_driverkit-1585.80" Sep 18 2026 22:02:52 Bluetooth: Version (null), 0 services, 0 devices, 0 incoming serial ports Network Service: Ethernet, Ethernet, en0 Thunderbolt Bus: Mac Studio, Apple Inc. Thunderbolt Bus: Mac Studio, Apple Inc. Thunderbolt Bus: Mac Studio, Apple Inc. Thunderbolt Bus: Mac Studio, Apple Inc. Thunderbolt Bus: Mac Studio, Apple Inc. Thunderbolt Bus: Mac Studio, Apple Inc. Thunderbolt Device: Studio Display, Apple, 1, 66.15

Open 4