Firefox Portable

The issue starts from Firefox 69 and persists on Firefox 70.0.1. It used to work properly on old versions. However, an error window prompts from version 69 saying my profile may be missing or cannot be accessed. Is there a particular reason why Firefox Portable have to access %AppData%\Mozilla and %LocalAppData%\Mozilla in order to start up? If those permissions are not necessarily needed, could you please fix this? Thank you!

I have Firefox installed and despite closing it and opening Firefox Portable when I click on a pdf for example or an html file it opens the installed firefox instead of the portable one. I have not set "Multiple Instances" to true and I understand that being it disabled is the default. Do note I have updated the portable "installation" to the latest portable release.

Edit: forgot to add I'm running it in W7 x64.

Once again FF updated automatically and removed all user controls over the process. This time, in addition to messing up add-ons, it also screwed up its default settings and would not stick as the default program. TB would not open FF Portable and resorts to the generic FF without my profile on PC. Time to return to a FF Portable old version? I'm sick of fiddling with "improvements" no one asked for! Last attempt at fixing it...

Just upgraded and got the message

You've launched an older version of Firefox

Version is 69.0.3.7221, but compatibility.ini is:
LastVersion=70.0_20191016161957/20191016161957
LastOSABI=WINNT_x86_64-msvc
LastPlatformDir=C:\PortableApps\FirefoxPortable\App\firefox64
LastAppDir=C:\PortableApps\FirefoxPortable\App\firefox64\browser

So, no wonder.
But v70 at 16 October?

FIX: Rename/delete compatibility.ini

Why does Firefox Portable crash so often and what can be done to resolve it? I just loaded v69.0.3 and not five minutes into my new session it locked up and I had to restart it.

This has been going on for some time. I use Windows 10 and keep the updates current. My computer is less than two years old.

Thank You!

Hi, there is a problem when visiting bilibili.com and can't play video smoothly from FirefoxPortable.exe.
It's stuck every 3-5 seconds and then the vision moves on then stuck again in a loop.
URL: https://www.bilibili.com/video/av71357702

But, it's ok when running firefox.exe from its install directory normally.
So is there any solution?

It seems this problem is back.

After setting up Firefox Developer's Edition v70, then moving it to a different path, the following happens:

1. It loses the set Theme and reverts to the default Dark Theme.

2. Add-Ons no longer work. Some of them can be made to refunction by disabling then re-enabling them.

Is there a workaround, or do we need to wait for the next version of the Firefox Developer loader app?

Hey again

I use Firefox Portable 55.0.2 on Windows 10.

I run a lot of windows of Firefox all day long on multiple computers, and going into settings and marking it to "Never check for updates (not recommended: security risk)" does the trick and my browsers remain on the version I need them to be.

I use Firefox Portable 55.0.2 on Windows 10. I just spent about 2 hours looking for a way to change the taskbar icon. I want to set a custom taskbar icon for every instance of Firefox Portable that I run.

I tend to run about 5 Firefoxes at the same time, and it becomes hard to know which one is which. So I would like to set a custom taskbar icon for each, make the taskbar icon a simple number, and that will be that.

So my taskbar will look like this:

1 | 2 | 3 | 4 | 5

Instead of like this:

FF | FF | FF | FF | FF

Looking for Firefox 68.1.1 or ESR 68.1.0 (not FF v69+).