Firefox Support Forum

I installed Firefox years ago. This morning, when I click on the browser icon, I get this message: Error platform '127.0.2' is not compatible with minVersion>= 127.0.1 maxVersion<= 127.0.1

What is going on? The browser updates itself so I don't do anything. But now, it doesn't work. I use an alternate browser to send this message to you.

Firefox is my favourite browser so I prefer using it in all my online activities. When I go to Adobe Firefly though, I consistently get a warning that this browser is not compatible and they suggest using Chrome, Safari or the latest version of Firefox !!! I am using the latest version available, 127.0.2 but Adobe does not detect it correctly. I have to switch to Chrome, that I'm not very fond of. I saw that a similar issue was posted 10 months ago but it's now archived and I can't even include a link to it here :( So, I hope this comment helps in case others have the same problem. I also hope Mozilla can fix the bug or whatever gets in the way. Lenovo laptop - Windows 10 updated Thanks!

I had to do a new install of Windows 11 and logged back into Firefox and can't find my old bookmarks. I got to this point and don't know how to retrieve old bookmarks:

C:\Windows.old\Users\meljo\AppData\Roaming\Mozilla\Firefox\Profiles Please help me.

Thanks Mel

I've been having this reoccurring firefox bug every couple of months where randomly all audio from the application stops working is no longer available in the volume mixer of windows 11 (see example screenshot with twitch tab in background playing)

In the past, I was able to fix this issue by simply restarting the audisrv service and everything would work normally but now nothing I do seems to work. I've tried:

- Resetting - Uninstall/reinstall - Disabled all extensions - New profile

I do not have this issue on firefox dev or firefox nightly. If anyone has any ideas on how I could resolve or better diagnose this issue it would be much appreciated! TIA

I have a very good PC (5800X3D, 7900XT, 32GB DDR4 3600), but Firefox (either the normal, canary and nightly version) can't play smoothly any 4K video (like the Borderlands trailer: https://www.youtube.com/watch?v=lU_NKNZljoQ ). 1440 and lower resolutions are fine, as are 4K videos on Chrome and Edge. FWIW, my CPU during 4K playback is barely used (1-2%), and my GPU's video codec (VCE) is used by around a third. Disabling HW accel makes things better, as it still stutters but it's (barely) passable. I already tried creating a new profile, but still it's the same.

The address wasn’t understood Firefox doesn’t know how to open this address, because one of the following protocols (javascript) isn’t associated with any program or is not allowed in this context. You might need to install other software to open this address.

Im getting this message on my newspaper site. It will not let me open the whole page just one article at a time but only after clicking above message

Hi, I am having some trouble with Mozilla Firefox version 127.02 on a Windows 11 PC. Certain websites do not load, for example, travel.state.org, which is a website to know the requirements to travel to the United States. However the site loads without any trouble on my Android phone, and on other browsers such as 'Microsoft Edge'. Can someone help me with this situation? Thank you this would be very much appreciated.

My pc auto updated today and now I am getting this message "ERROR: Platform version 127.0.02 is not compatible with min/max version 127.0.1" I CANNOT go back to older version as there is none, when using the tool from FireFox.

all of a sudden when I log on to hotmail dot com I get the error message too many requests when I switch browsers to edge I can log on to hotmail as normal

searched the internet but so far have not found a fix

windows 11 and firefox both up to date

Lately YouTube playing videos have been playing super fast or skipping straight to the end. I mean, they are horribly fast.

Things to know:

• I am posting here because I can't determine whether browsers may have settings unique to them that I need to change. This also happens in Chrome, but not Edge.
• I was recently forced to upgrade to Windows 11 - I can't say this issue happened exactly at that time, but fairly recently after the upgrade. I am running Windows 11 Pro.
• This does NOT happen when playing in a private browser window, either Firefox or Chrome.
• Having the Mozilla VPN on or off has no effect.
• I am sure the playback speed is set to normal. I have tried changing the playback speed to anything but normal and then back to normal and the current video runs correctly UNTIL I play the next video.
• This does not happen with Vimeo.
• It does not happen in FF for Android.

Any questions, thoughts, or advice would be appreciated.

Hi, I've noticed an inconsistency when clicking on Web-based protocol handlers in Firefox on Windows. Specifically, when I click on a mailto protocol, such as "mailto:email@example.com," it directly opens my default email application without any confirmation prompt. However, when I click on any other protocol handler, a confirmation pop-up appears, asking me to confirm which application to use. I have attached an example of what I mean.

Is there a way to configure Firefox to always show a confirmation pop-up for all protocol handlers, including mailto links? I prefer to have the option to choose the application each time rather than automatically using the default one.

duplicate of /questions/1451035 thread.

Hello, I cannot log in to Twitter/x.com with the Firefox browser. There is a constant loop when registering. Firefox browser does not connect Twitter/X.com.

Thanks for your Help.

Since the penultimate and now the last current update to version 127.0.2 (64Bit), the button (tile with the + sign) to add new shortcuts is no longer available. How can new shortcuts be added now?

I have a Yahoo email account and Firefox has the saved password for it. I've changed the password for my Yahoo email account recently. When Firefox prompted me if I want to update the saved password I must have chosen "NO", I don't remember. I stayed logged in the Yahoo email account for a few days after I've changed the password. I've logged out of the Yahoo account. Now I can't log back in because I don't remember the new password I've created.

I'm wondering if Firefox has the new Yahoo email account password saved somewhere in its cache.

OS: Windows 10. Firefox: 127.0.2 (64-bit).

Hello everyone, I have had a problem for a few weeks on the X platform. Some buttons no longer appear, notably the edit button on an image post or the "see" button for a hidden account (see images attached) Does anyone have a solution? I uninstalled ALL the extensions and restarted the app, but nothing works! Thanks in advance

Firefox : 127.0.1 (64 bits) Mac mini M1 2020, mac osx Sonoma 14.4

Starting with Firefox version 120, you can set Firefox to automatically launch whenever you start or restart your Windows computer. https://support.mozilla.org/en-US/kb/open-firefox-automatically-when-you-start-computer

The browser shows opt-in prompt for the user to easily setup this behavior. However, I do not want to do this.

When I click "No thanks", the prompt goes away, but couple days later, it returns. I guess that an update resets the prompt status.

Is there a way to permanently disable this opt-in prompt without allowing Firefox to start automatically with the computer?

basically just the title. In the last couple days youtube.com specifically has been borderline unusable for me on firefox. All other websites work fine for me on firesfox and youtube has no issues on other browsers.