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Firefox Portable

Files that can be safely deleted from a Firefox profile?

Submitted by jaredmilkins on July 9, 2019 - 12:26pm

Hello Portable Apps family, Can you help me understand which files and folders can be safely deleted from a Firefox Portable profile manually from the "Data\profile" folder. Let's say that I created a Firefox Portable profile in a folder named "FirefoxPortable" and made all necessary changes I like and placed it in drive "D:"

[Fixed] Some Firefox/Thunderbird 68+/SeaMonkey extensions will fail to load after moving

John T. Haller's picture
Submitted by John T. Haller on June 13, 2019 - 3:55pm

ISSUE: Some extensions (example NoScript) will fail to move on first run after moving from one location to another in Firefox Portable 67.0.2. This is due to the reliance on a file called addonStartup.json.lz4 in the profile directory that stores full paths. This file is not portable.

Uninstalled an app which corrupted almost all extensions in Firefox Portable

Submitted by Kernel on June 12, 2019 - 1:15am

I'm running Firefox Portable Developer's Edition v67.0b19.

I uninstalled an app which normally inserts an extension into all browsers on the system, including Firefox. Normally, uninstalling this app causes those added extensions to be uninstalled, and all is well.

link in thunderbird portable opens new firefox session rather than using already opened session

Submitted by jim g on June 11, 2019 - 9:20am

A couple of updates ago, I don't remember exactly when it started, when I click on a link in an email from thunderbird portable, it opens a new version of firefox rather than using the currently open firefox session. What worse, it doesn't load any of the extensions.
This is on latest windows 10. The "choose a default browser" is set to firefox.
Any suggestions will be greatly appreciated as this has become more annoying each time.

I only get the splash screen for few seconds and firefox Portable does not start

Submitted by stnetwork2 on May 30, 2019 - 10:55am

I only get the splash screen for few seconds and firefox Portable does not start

Windows 10 Pro 64bit
Desktop pc
Installed in C:PortableApps

I have Firefox std installed and working okay

If I try and start firefox Portable with std firefox running I get the std error that firefox is already running

ChromiumPortable works fine and both these are working on my windows 10 laptop

Suggestions to sort this would be great, thanks

new window causes firefox to load blank profile

amdcrash's picture
Submitted by amdcrash on May 28, 2019 - 8:45am

when opening Firefox in a new window when one is already open by right clicking on it`s taskbar icon, clicking on new tab or the firefox game, causes a new window with a new profile to be read, using about:profiles shows that it is the only profile when in reality, my profile is the only one.

running windows 10 (version 1803, build 17134.766) 64 bit OS, install path is C:\Users\username\Desktop\files\PortableApps\FirefoxPortable, OS was restored.

Taskbar jump lists misbehaving in 67: opening wrong profile

Submitted by Lemon Juice on May 27, 2019 - 5:41pm

In Firefox Portable 67 I noticed a problem with Windows jump lists in the taskbar - there are menus to open a new tab, a new window or a frequently visited sites - when Firefox Portable is open and I click on any of these menu items a new instance of Firefox Portable is opened in new profile, not the one I'm currently using. This is not how the jump lists work for installed Firefox - the currently used profile is used and that's how it should be. This effectively makes the taskbar jump lists useless since opening a new instance in a new profile is almost never what the user intends.

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