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perfomance issue in firefox

we are using firefox std version in more than 15000 machines in our organisation, recentlty we migrated to all machines to ESR version, but now we are getting escallation… (read more)

we are using firefox std version in more than 15000 machines in our organisation, recentlty we migrated to all machines to ESR version, but now we are getting escallation, the application working very slow and not opening sometimes

Open 27
Firefox for Enterprise Crashing and slow performance

all configuration, passwords, and bookmarks were lost in latest upgrade 140.9.

My in house security team, recently suggested that Firefox be marked for automatic updates. I did so reluctantly and within three weeks, my feelings were confirmed. I l… (read more)

My in house security team, recently suggested that Firefox be marked for automatic updates. I did so reluctantly and within three weeks, my feelings were confirmed. I logged in and hit the firefox button. Not found. OK, where did they move it? Program Files. OK. I opened Firefox. No configuration, no passwords, and no bookmarks.

The help to restore previous bookmarks does not work, presumably because the file was deleted with everything else in Program Files (x86)/Mozilla Firefox.

You should not force an update that will cause the user to lose work -- never, ever.

If you're going to move the installation directory, the user should get a chance to backup first. I did not get that chance and I've lost work. Further, I've lost confidence in your product. I can no longer recommend Firefox to others as I've done for decades.

This is not a good day for you and your product.

Open 1 63
Firefox for Enterprise Update
TyDraniu replied 2 months ago

"Header Field Too Long" error when logging into Microsoft Web Apps on Mac

When logging into microsoft web apps using Firefox 140.9.0esr (aarch64) on my MacBook Pro, I get an error message reading "Bad Request - Header Field Too Long. HTTP Error… (read more)

When logging into microsoft web apps using Firefox 140.9.0esr (aarch64) on my MacBook Pro, I get an error message reading "Bad Request - Header Field Too Long. HTTP Error 400. A request header field is too long." This error page loads after I sign-in using my workplace credentials on the sign-in page. For example, going to outlook.office365.com/mail.

I've done some searching online already for solutions and have tried: 1) turning off enhanced tracking protection for this site 2) turning off all browser add-ons and extensions 3) regenerating the cookies4.sqlite* files in the Firefox Profiles folder 4) starting in "Troubleshoot Mode"

The only thing that's worked has been to start Firefox in the mode where windows are not private, and then select "New Private Window" from the File menu. Within that window I can log in successfully to Microsoft Web Apps. BUT, when I turn on "Always Use Private Browsing Mode" in the settings and restart firefox, I get the "Header Field Too Long" error message even though the browser window is private. I'd like to run in Always Use Private Browsing mode.

Ideas and help? TIA Dave

My system: Firefox 140.9.0 esr (aarch64) MacBook Pro, Mac14.6, Apple M2 Max with 12 cores, 32 GB memory macOS 26.3.1

Open 72
Firefox for Enterprise Customization