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Firefox Portable

Problem on where to install portable version of Firefox 46

Submitted by Trist on July 5, 2018 - 4:22pm

I tried to install a portable version of Firefox 46 because I desperately needed to access the hundreds of web pages I had saved in the MAFF format, and I still had the .xpi file for that extension saved on my old computer (no longer available for download). Yes, I know that I can still access those maff files in the extended release version of Firefox (v. 52.9) but that won't happen until after I've done a clean install of Windows necessitated by a calamitous remote session with the fellow who built my new computer.

Can I have MANY profiles - but JUST one 'data' folder?

Submitted by enginestar on June 28, 2018 - 1:46pm

I want to have different profiles and have cookies and other data stored independent (and not mixing or exposing to other profiles.)

EASY: just have different copies of the Firefox Portable.
This is OK... but each folder is 300MB.
I have 10 users. Each user needs to have 4 or 5 profiles.
So that could be 300MB x 50 = loads of space needed.

Whereas... I think it would be nice to have JUST the one folder with Firefox Portable + specific folders where I keep data for each profile.

How do I do this?


Having problems with 52.8 ESR

Submitted by mozfan on June 22, 2018 - 1:35pm

I've had frequent freezing and Captcha errors from CL website on my old FF38 and had to update to 52.8 ESR (old machine winXP, SP2). For a few weeks Captcha worked - probably because I allowed cookies and got rid of NoScript. Placing CL and other sites in allowed Exceptions never worked. All cookies had to be allowed and kept till they expire. Now, even with everything allowed, including that I imagine must be allowed for Captcha to work, it still gives me errors on CL website.

Unable to access any site in FirefoxPortable - invalid error message received

Submitted by PetersT on June 13, 2018 - 7:44am

This started occurring on my home PC (Windows10) on Friday 8 June 2018. When I fired up FirefoxPortable from my USB drive platform, and it opened my home tabs (,,, and, I saw the same result on each tab: "The owner of X has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website. The site uses HTTP Strict Transport Security (HSTS) to specify that Firefox may only connect to it securely. As a result, it is not possible to add an exception for this certificate."

Got unbeknownstly updated from 38 to 45 firefoxDEV. Need 38-40tops and can't find

Submitted by frankyboe on June 10, 2018 - 12:13am

Hi friendos,

I'm in search of a valid copy of firefox developer (portable, preferrably, but not- will do the job), since i got updated and i'd like to go back to that version but can't find a copy anywhere.

So, if some of you guys would send a link or an upload of a working copy of this version, i'd be more than thankful.


Using Firefox Portable with Selenium 3+ and GeckoDriver

Submitted by dionysiose on June 8, 2018 - 7:02am

I am trying to use Firefox Portable 60.0.1 with Selenium 3.11.0 and GeckoDriver 0.20.0.

So I specify the executable for both the Firefox Portable and GeckoDriver:

System.setProperty("webdriver.gecko.driver", ClassLoader.getSystemResource("webdriver/geckodriver_0.11.1.exe").getFile());
System.setProperty("webdriver.firefox.bin", ClassLoader.getSystemResource("FirefoxPortableESR/FirefoxPortable.exe").getFile());

The above results to Firefox Portable and GeckoDriver not being able to communicate with each other. However, if I run: