You are here

Firefox Portable

Firefox legacy 115.4.0

Submitted by endell esq on November 9, 2023 - 11:04am

I've just tried out Firefox 115.4.0 legacy...When I try to start it on my Win 7 system, I get an error message stating 'Firefox 116 and later require Win Firefox legacy 115 instead'

When I press yes, it produces the same message.
I have had to go into the Firefox64 directory to start Firefox from where it starts normally.

Also, I have downloaded the legacy and the ESR version of Firefox, As I'm using the legacy version, do I need the ESR version?


Firefox Portable 115.4.0esr Drag Drop Shortcuts Bug

Submitted by habanero.dave on November 1, 2023 - 12:02pm

FF Portable 115.4.0esr (but also going back to at least 115.x.x if not older versions) Win7SP1 x64

For various purposes, I used to drag 'n drop shortcuts from FF URL bar, into folders. That stopped working after a FF update. Researching it, I found it worked again by launching FF portable with -no-deelevate on the shortcut to it.

Weird Multiple Instances Problem

Submitted by An Unused Username on October 27, 2023 - 1:04pm

For years I've been running multiple instances of Firefox portable with no problem. As of version 119.0, I've run into an odd situation... if any other instance (BTW all instances are the same portable version) is launched after the primary instance (the one I always have running) it just opens another window of the same primary instance. Which is obviously a problem because the primary instance is the one always running. However, if I launch one of my secondary Firefox portables first (ones I only use ocassionally), then my primary one will launch as it should.

[Fixed] Firefox Portable 118.0.2 not supporting secondary launches with multiple instances

Submitted by Stitcher on October 22, 2023 - 2:54pm

I just updated from FF Portable 117 to 118.0.2 (64-bit), and I'm seeing the following problem.

I have FF Portable set as my default app for URLs. Usually it is already running (I start it right after rebooting my PC). In 117 and earlier, when I click a link in Thunderbird, a new tab is opened in Firefox Portable. With 118, I get the dialog that says: "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window."

ESR 115.3.1 prefs

Submitted by Private on October 18, 2023 - 5:23pm


I have an issue with FirefoxPortableESR 115.3.1: every time I change the "browser.privacySegmentation.createdShortcut" pref's value from TRUE to FALSE, it always returns back to TRUE after each restart. Is it a bug or a feature? The values of other prefs changed successfully and stayed like that after browser restart.

I tried changing the value of this pref on regular (non-portable) Firefox ESR 115.3.1, and everything worked fine.