Firefox Portable

Been using Firefox portable just fine for months, but now my Bookmarks bar is gone and I see this:

"The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem."

Which links to this:
https://support.mozilla.org/en-US/kb/fix-bookmarks-and-history-will-not-...

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PortableApps.com Platform
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Não foi possível baixar o arquivo. Isso pode ter ocorrido devido à um problema com o proxy ou a rede ou ao servidor do arquivo não permitir downloads a partir da sua localização atual. Arquivo: http://portableapps.com/redirect/?s=p&a=FirefoxPortable&d=sfpa&wv=7&f=Fi...

A long time ago, I moved PortableApps.com and FirefoxPortable to my D drive. I did this because I also had OBSPortable installed and I could not get OBSPortable pinned to the taskbar from the USB Drive. Once I moved FirefoxPortable and OBSPortable to the D Drive, both would pin no problem. But this week, I uninstalled OBSPortable. I'm just using FIrefoxPortable now. And I want to install OpenOfficePortable too. I'd like to move both of these to my USB Drive, but I'm running into a problem where FirefoxPortable won't pin to the Taskbar from the USB Drive. Any idea why?

Sorry, i speak Englisch only little.
Update from 94 to 95. Avast told Win32.Evo-Gen[Susp]

Windows x64, Firefox 78.15, copied on local system disk
I have quite strange situation: when I run Firefox from shortcut, it uses profile from ...\FirefoxPortableESR\Data\profile as expected, but when I press a link from email, it switches to %APPDATA%\Roaming\Mozilla\Firefox\profile which is definitely not what I want. Moreover, I see all that bunch of mozilla folders in %PROGRAMDATA%, %APPDATA%\Local, %APPDATA%\LocalLow and %APPDATA%\Roaming. So what's wrong with me/Mozilla/outer space etc.?

FireFox portable still writes data in %ProgramData%\Mozilla relating to the updater...

So I've noticed the firefox account keeps getting disconnected every few hours and I have no clue why. I use the account because of its password manager sync capability. Any ideas why this happens?

I have two laptops.

Acer Aspire 5, which is really old.

Acer Nitro, which is an entry level gaming laptop.

If you remember, many months ago, I was having some issues with Firefox Portable. I forgot what they were. But I did a clean install and started over and did everything right that time. So there shouldn't be any issues.

So anyway, I've been getting a lot of update alerts from the browsers on both computers and have been constantly launching PortableApps.com Platform to update the browser.

I happened across this in another forum.
https://ffprofile.com/

Maybe it'll be of some use to someone.

First post, newbie.
I have Firefox ESR 52 installed on my desktop (for old school reasons, eg Classic Theme Restorer), and would like to try latest Firefox Portable ESR. I would install it to the same 8 GB flashdrive that has my mail client: Thunderbird Portable Legacy 3.1 (great little program, clean functional interface, never any issues). There's over 7 GB of free space on this flashdrive.
Couple of concerns:
Any way to set Firefox Portable to be the default browser which launches when I click on a link in an email in Thunderbird Portable?