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.

YouTube has been so slow in Firefox. It just takes a ton of time for the video to actually play. It's just a spinning circle in a video. I can refresh several times and then it plays. I cleared my cache, history, data...etc everything from Firefox. That seemed to help for a bit. Then it just resulted back to being slow. It's just in Firefox. I played videos in Edge. It was fine. No issues. It's just FireFox. It started most recently too. It wasn't happening a week ago. I even tried going back to an old version of Firefox. Didn't help. Anyone know how to fix? Not using ad blockers either FYI. I just want videos to play normally and fast.

One of the add-in permissions is "Access your data for sites in the “named” domain". I looked at that and thought, "That certainly cannot include passwords"; BUT the explanation for this permission is: "The extension could read the content of web pages you visit in the specified domain, as well as data you enter into those web pages, such as usernames and passwords. "

I was stunned.

That means that addins that get this permission have access to my banking/medical/etc. usernames & passwords. This is not acceptable. Can a permission be developed that would be: "Access your data for sites in the “named” domain" (except usernames/passwords).

The permission "Access your data for all websites" is significantly worse in that it applies to all sites.

I have been using [edited] @comcast.net as user name for Firefox account. I want to delete that email because I'm leaving comcast ASAP. I read instruction that say add a new email name as a secondary account and then delete the primary one above. I entered [edited[ @gmail.com. I got a message that said that account already exists. Since I didn't know that or remember any password for it, I entered [edited] @gmail.com and said "forgot password." I changed it Now Firefox won't let me in using the [edited] @gmail.com account. Would appreciate any help you can offer.

I tried to change the font-size of address bar, tabs, sidebar and toolbar using the method given in The method given in: [https://support.mozilla.org/en-US/que.../1239467] gives no change at all of the font-size no matter the value I use. Any ideas? I'm using Windows 10 Firefox 127

I have noticed in the help section that all sync data is removed if password is reset. I have just lost all my passwords, bookmarks, settings, everything, because I had to format my computer and didn't memorize my firefox password.

Is there any chance at all to have my data restored regardless? I understand I am at fault, but this outreach is my last hope, I guess.

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).

Download Web plugin to access my Security DVR. When I type in the IP of the DVR, firefox will momentarily go to the plugin but then says it needs to be downloaded. HELP

Thank you

You haven't installed the plugin or it is not the latest version.

Please click download to download the latest plugin.

Please close browser before plugin installation.

Hello, I am using Firefox on a new computer, and I have a bizarre problem that I never experienced on other computers. The 'recently closed tabs' and 'recently closed windows' options are disabled. They are grey, and I can't click them (see image). Also, the 'reopen closed tab' when you right-click one of the tabs is disabled (grey). I have tried to search everywhere why it can happen and found nothing. Any advice on how to enable this option? Thanks

After auto update this error message came up and will not allow Firefox to open. Earlier in the day it had also updated ( not sure to what version) and was working fine. Laptop was then shut down and turned off for aprox. 1 hr. I then turned it back on and tried to open Firefox and it again asked to allow Firefox to make changes to my computer to which I clicked Yes. It then would not open and this error came up. error message Platform version 127.0.2 is not compatible with minVersion >=127.0.1 maxVersion <= 127.0.1

I installed a dev version of Firefox to test a plugin.

Then I uninstalled the dev version, but now none of my profiles on the regular version work...

Please help me, I really need my old browser history and cookies.

When I try to use one of my old profiles, I get "You've launched an older version of Firefox" and it tells me to either Create New Profile or Exit.

I read online that people add "-allow-downgrade" to the Windows shortcut, but this does nothing for me.

Thanks you and please help!

There was an update posted today. I ran the update this morning. Now Firefox will not open.

error platform version 127.0.1 not compatible with miniversion >= 127.0

                                                                                  miniversion <= 127.0

Running Windows 10 Version 10.0.19045 Build 19045 64 bit Should I remove and reload program?

why do i get a message that firefox has crashed. what has happened. i am not satified with firefox. it is very slow and sometimes crashes.

but the main question is: what can i do right now.

I had the situation maybe a year ago. I use the Firefox profile manager.

I just updated to 127.02, and now not I'm getting this because for whatever reason, since the update, I am somehow on the beta channel, but only with this profile. I just opened two other profiles, and neither is on the beta channel, although i don't know what "Firefox is being updated by another instance" means.

I don't know if it's just a coincidence, but I'm also just noticing that a number of my addons settings have reverted to default.

When I used to take screenshots, they would be automatically named with the date, time, and part of the text captured regardless of language. A few days ago and with no reason I can discern, it now saves any non-English screenshots with something like this "Screenshot 2024-06-23 a[...].png" instead of "Screenshot 2024-06-22 at 08-02-28 Politics Policy Polit[...].png" (usual for English text and what I used to get with all languages).

Which means I have to manually rename screenshots. Does anyone know how I can fix this because I am working on a project with lots of screenshots for topics from different languages?

I just noticed today that none of my various folders storing important bookmarks work anymore and they have all lost their own indiviual logos. Instead there are just globe logos!? This is very recent so i can only imagine so kind of update has done this?

Can i get these fixed?

I recently suffered from the "127.0.1" not compatible error. Eventually I was persuaded to reinstall firefox from the Mozilla oficial site using Edge, despite having reservations about losing my passwords etc. which has happened before. Fortunately, the installation routine included an update option which preserved all of that. However, my menus bar (File ...... History, Bookmarks...) is missing and I cannot find any way to get it back. I rely upon it to restore previous sessions, because I routinely have the same 7 tabs open and want to be able to get them back after an update or laptop shutdown, and also use it to search history and find bookmarks that are not in the bookmarks bar. Any help welcome.

As an asside, my pet hate is updates to any application that remove, move, or hide a very useful feature without explanation or warning and claim to be to "improve the user experience". Take it from a long standing user, they don't. Quite the contrary.

how are shortcuts created on my "new tab" home page in firefox browser. I used to be able to create the shortcuts I wanted, not random shortcuts that I might have visited once. Now shortcuts appear that I don't want. I know I can remove them by dismissing them but I should not get them in the first place. Please help.

When im starting my computer, suddenly this program with old firefox logo auto starting on windows taskbar, i cant open(maximize) it....when i hover to that old firefox logo, it just shows random text......

If i'm opening task manager, that program or something is in C:\Program Files (x86)\Common Files\AlphaPress under the name update.exe.....i alrd close that program, delete that, and running malwarebytes, but didnt find any threat.....If u can reassure me that it wasnt dangerous malware or anything....maybe some real firefox update?