Showing questions for topic:

How to return to previous version from Version 151.0.3?

I'm too old and tired to try to find my way around the new update. How can I return to the previous version? Life was so simple. Now I spend more time trying to find th… (read more)

I'm too old and tired to try to find my way around the new update. How can I return to the previous version? Life was so simple. Now I spend more time trying to find things that I can't find than I do online doing something productive.

Please tell me there's a simple way to get back to the previous version and that I won't lose my bookmarks and links.

Open 1 1 80

Error: Platform version xxx is not compatible with xxxx

Hello, a recurring problem that's been bothering me for several months is driving me crazy, causing me to use Firefox less and less. I regularly get the dreaded message "… (read more)

Hello, a recurring problem that's been bothering me for several months is driving me crazy, causing me to use Firefox less and less.

I regularly get the dreaded message "Error: Platform version xxx is not compatible with xxxx," which seems to have been around for years and still hasn't been fixed. Rebooting, reinstalling, or repairing the installation with every automatic update isn't a solution; it's just a nuisance.

Open 2 1 81

Have there been issues since the May 12 update which came up as a "compatiability issue 150.0.3" ?

The Firefox update I was prompted to initiate on May 12 resulted in a compatibility issue message. Following Firebox Help recommendations, I re-installed my Firefox. Now … (read more)

The Firefox update I was prompted to initiate on May 12 resulted in a compatibility issue message. Following Firebox Help recommendations, I re-installed my Firefox. Now I see that my downloads folder has a long string of unfamiliar files, and I need assurance that these are not remnants of malicious activity. All files have names like i-33639-002-XX.jpg and are dated the same time (5/12/2026, 4:07 PM). Each file shows as “0 KB” in size. All are listed as “JPG File”. Has this happened to other Firefox users?

Open 1 30

Cannot Upgrade from Firefox 149.0

I am running Firefox 149.0 (64-bit) on Windows 10. FF tells me that there is an update. I downloaded the update, and when I restart FF, it does not update. Version 149… (read more)

I am running Firefox 149.0 (64-bit) on Windows 10. FF tells me that there is an update. I downloaded the update, and when I restart FF, it does not update. Version 149.0 is re-started, and Help --> About Firefox again tells me to restart to upgrade. I have tried the upgrade at least three times.

Solved 9 171

Updating Firefox current version of software

I received a msg from Mozilla that my Firefox was out of date and to download current version. I downloaded the current version but it does not update. I went to the me… (read more)

I received a msg from Mozilla that my Firefox was out of date and to download current version. I downloaded the current version but it does not update. I went to the menue and firefox help and it said automatic downloads disabled by system adminiestrator, I'm running linux mint. How do I get the download to update?

Archived 2 351

Firefox Requiring Admin UAC to Update - Still Fails

Firefox will randomly require an admin to install the latest update and then go 10 or so updates without any admin access needed. Work device, all users are non admin mak… (read more)

Firefox will randomly require an admin to install the latest update and then go 10 or so updates without any admin access needed.

Work device, all users are non admin making this extremely tedious to update a browser that brings a new update almost every 3-5 days.

On top of that, I elevated to admin and went to the help > About section and pressed Restart to Update Firefox and entered admin creds and still its refusing to update. Just re-opens on 151.0.4.

On the previous version it did the same thing. I completely wiped my firefox from the system, removed all registry and file settings, rebooted, and did a fresh install.

now on 152.0 its doing the same thing again.

Open 2 122

Apparently (per the pop-up which appears on my screen) it's time to update Firefox . . . doesn't happen

Presently 142.0.1 (64-bit) installed; previous updates/downloads had no problems. Now, however, going to https://www.firefox.com/en-US/?utm_campaign=SET_DEFAULT_BROWSER a… (read more)

Presently 142.0.1 (64-bit) installed; previous updates/downloads had no problems.

Now, however, going to https://www.firefox.com/en-US/?utm_campaign=SET_DEFAULT_BROWSER and attempt a download results in this (image).

Any solution to this?

Thank you.

Archived 9 230

Issues following 8/5/25 browser update

After the 8/5/25 Firefox update the internet is inaccessible on my laptop through the standard Firefox browser. The internet is accessible with MS Edge. Toolbar is set t… (read more)

After the 8/5/25 Firefox update the internet is inaccessible on my laptop through the standard Firefox browser. The internet is accessible with MS Edge. Toolbar is set to always show bookmarks but none appear. Also, the browser's application's menu does not open to access options such as restore previous session, recently closed tabs, etc. I've restarted my device several times without it resolving the issues with the standard browser.

The Firefox developer version opened in command prompt safe mode (firefox -safe-mode), which is how this inquiry is being sent, but no bookmarks on tool bar or current page history from the standard (non-developer) Firefox.

I'd like to return to accessing the internet using the standard Firefox version with its bookmarks, history, etc. I am using Windows 10. Thank you.

Archived 1 180

4 "default" profiles, only 1 allows automatic updating and it's not my real default profile

I've had a problem for a while where Firefox tells me "Firefox is being updated by another instance" and the only way I've been able to get updates is by using the instal… (read more)

I've had a problem for a while where Firefox tells me "Firefox is being updated by another instance" and the only way I've been able to get updates is by using the installer.

In my attempts to resolve this, I learned of the `about:profiles`. I have never set up profiles so I figures I should only have the 1 default profile but it turns out I have `default`, `default-release`, default-release-1`, and `default-release-2`.

Of these profiles, the `default-release` is the 1 that has my data while it is `default-release-1` that is able to update.

I would like to make it so that I only have 1 profile that has all of my data AND is able to update.

I already tried removing all the profiles accept the one with my data but that leaves Firefox unable to update. I restored all the profiles I removed and I am back to where I started.

Does anyone have any suggestions?

Solved 5 142

Widevine Content Decryption Module is NOT updating

The plugging is NOT updating and it's blocking me from watching anything on streaming. I've tried triggering the update by turning it on and off, by tugging on and off th… (read more)

The plugging is NOT updating and it's blocking me from watching anything on streaming. I've tried triggering the update by turning it on and off, by tugging on and off the "DRM" option in settings, by turning off the updates and then looking for updates... I went to about:config and made sure that all options were "true". What I get is an "error in downloading the update" that I can't fix.

Can someone help?

Solved 1 50

Auto-update does not work?

I have auto-update enabled on my desktop (Windows 10) but the browser still has a popup message that asks me to "restart to install updates" every time I open it. It says… (read more)

I have auto-update enabled on my desktop (Windows 10) but the browser still has a popup message that asks me to "restart to install updates" every time I open it. It says the updates install successfully, but next time I go on Firefox it wants me to close and reopen the app again. Auto-updates are, as stated, enabled, and it should be able to update in the background, but it doesn't. Is it something wrong with my instance of Firefox, or maybe my desktop has some settings wrong?? I have disabled and re-enabled auto-updates, and restarted my computer, just to get the basic fixes out of the way lol. The updates work just fine on my laptop (also Windows 10) btw.

Thanks for looking!

Open 1

Can't update Firefox to current version

I currently have Version 115.37.0esr (64-bit). When I click Check For Updates, it says I'm updated to the current version, but apparently the current version is 152.0.6. … (read more)

I currently have Version 115.37.0esr (64-bit). When I click Check For Updates, it says I'm updated to the current version, but apparently the current version is 152.0.6. Why can't I get this version?

Open 1 20

Firfox frozen when updating to v157.0

when updating from 154.0 to 157.0 I get a pop up window saying there is a helper that needs to be installed, but when I input my admin account details it gets stuck and w… (read more)

when updating from 154.0 to 157.0 I get a pop up window saying there is a helper that needs to be installed, but when I input my admin account details it gets stuck and won't continue the update (Firefox appears frozen in Activity monitor). The only way to sort this out seems to stop any updates by issuing the command:

rm -rf ~/Library/Caches/Mozilla/updates

from a terminal window. This way I can restart Firefox, but it did not update of course. Is there any solution to this? Thank you !

Open 3