Firefox Portable

I want to run FirefoxPortable and FirefoxDevPortable at the same time but when I try to start the second browser it says Firefox is already running.
Is it in any why possible to run both at the same time?

It is possible to run FirefoxDevPortable and then start an normally installed Firefox instance. So it is possible to run 2 Firefox at the same time, but I want to run 2 Portable version of Firefox.

By default Firefox portable does not saves browsing cache and websites opening is slow.
How i can enable browsing cache?

Matterport used to open and work well, I just had to allow access, but suddenly it no longer opens showing a black screen. Still works in Chrome, but not in Pale Moon. I don't remember modifying anything, did a system restore and started in safe mode - same thing. The only thing that may have changed was Chrome downloaded something - a new version? - without my knowledge. However, the system restore did not reverse whatever they may have done. I'd hate to sssswitch to Chrome every time I need to open a VR link...

Any thoughts? Thank you

The Portable Firefox 100b2 still shows b1 (by the green Download button) and links to b1, creating a 404.
Both must be corrected to show/link to b2 instead.

Just FYI

John, today's download update is showing FF 98.0.3 instead of 99.0. Is this a typo? Thanks for all you do.

I remember asking a similar question before. i set Firefox Portable update settings to manual, but when launch FFP on a different PC, the update settings change to automatic (Even if the path to the profile directory is same).

Are Firefox update settings stored in the FFP directory?

I briefly updated to the lastest version v99 or so (but made a snapshot first, and then restored after the problem described below). I'm back to running v 90.0.2 and everything is fine, I think I had to fix this once before but can't recall.

Anyway, the issue is the huge amount of spacing in the menus for the bookmark folders.

I read somewhere you can change something in file C:\Users\XXX\AppData\Roaming\Mozilla\Firefox\Profiles\XXX.default-release\chrome\userChrome.css and copy the below lines at the top.

Hallo. How to change Firefox Portable icon in Firefox Portable version 98.x.x ??
Tank You

Hi,
I have this problem.
Firefox portable won't start anymore.
I have tried different versions.
I have tried installing and uninstalling firefox, but it doesn't work.

It doesn't show up in the list of running apps, so I can't terminate it.

I tried manually cleaning the windows10 registry, deleted dozens of entries and it only worked once.
On the next attempt, it won't start again.

There must be something in the windows registry blocking it, but I don't know what.

Can you tell me how to fix it?

Thanks

Hi.
Today I noticed an unexpected behavior in Firefox Portable.
If I have the pref "app.update.staging.enabled" set to false, FirefoxPortable.exe is terminated while updater.exe is still running.

The pref description: "If set to true, the Update Service will apply updates in the background when it finishes downloading them."
So, the updates are applied in the background while firefox is still running (true). Otherwise, they are applied when you restart firefox (false).