Is it possible to do this?
I've tried modifying my user.js to force it (I've done somilar in the past on my linux boxes)by adding the lines:
user_pref("network.protocol-handler.app.http", "U:\PortableApps\FirefoxPortable\FirefoxPortable.exe");
user_pref("network.protocol-handler.app.https", "U:\PortableApps\FirefoxPortable\FirefoxPortable.exe");
but this doesn't work 
Any suggestions?
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I just posted a thread in the Firefox Portable forum that might help you.
https://portableapps.com/node/17483
Jim
neutron1132 (at) usa (dot) com
Thanks for the reply, but I'm looking for a way to force thunderbird to launch firefox regardless of the computer I'm running portable apps from.
Hasn't anyone else experienced this need?
To add to this, IE is launched regardless of whether I have firefox portable running or not.
many people want have something like that. But this will not be so simple since the handling of url links is driven by the registry definition for those handlers. One would have to point those to the portable browser, thus making it non portable by that.
Since most people want keep the apps portable and not register them in the windows registry , thats is why probably such mechanism are not included here.
Otto Sykora
Basel, Switzerland
If mimeTypes.rdf would accept relative file addressing then just pointing it to the FFP, which is on the same drive as TBP, it would work.
I've wanted this too. But, unfortunately, relative addressing is not usable.
well yes, but the call up of a browser is little bit more comlex then cal up of an application for an attachment. mimetypes can take only absolute paths apparently, have tested it too, and as we know it does strange things anyway sometimes.
The call for browser must work from a url link too, not only when I have an attachment of html kind
So here the whole mechanism of defoult browser comes to game, number of keys actig here. If we could replace the keys temporary and place orig back at the end? could work, but if reliable, dont know.
Otto Sykora
Basel, Switzerland
Yes, you're quite right - the URL link, I forgot.
In a way it's all disappointing. We install portable applications because we want to use them. But can't, because of windows limitations, portable apps limitations and who knows what else.
I think that if a portable application is installed it should be used by default by all other applications, especially other portable applications.
Maybe one day.
Forgive a UberNoob for weighing in with an inexperienced opinion but can't Cafe Mod or Portable File Associator achieve this?
PortableApps.com Advocate
the file associator, ok this will assist you with the opening of attachments of certain kind, will do similar thing like the mimetypes (if this would work properly).
But the opening of browser upon clicking url link is one step further, uses two different areas in registry to define that, is linked here and there...
It is even more pain then opposite, people would like the mailto tag opening thunderbird from the stick on any system you stick the thing in. Also this could be probably achieved, but if done some simple way, the portability is basically lost and the fix tied to one particular system.
Otto Sykora
Basel, Switzerland
I have only tried it on a computer that has the desktop version of Firefox installed, but I would suggest that if your default browser is set up as Firefox (desktop version) and Firefox Portable is already running, your links will be started in Firefox Portable.
Otherwise, you're stuck with cut and paste.
Michel Gagnon
Montréal (Québec, Canada)
Why not try Launchy? That's the best thing I could find.
OK, I just went to test it on my TB portable .
Installed as described, placed even the icon into the panel.
But could not find anything useful to make it do what is asked here so far. Well I am not the fastest and brightest, advanced age already...
but figured out from the website, that this uses a xml file, which has to be created in advance. Paths in that file are absolute and has to be absolute, pointing to apps you can write in.
= not portable
It looks for its xml definitions i a folder not existing on the current portable apps versions, it is mainly done for desktop versions of TB.
So to make it work, as it appears , one has to set up the folder under profile, then go to the website and use the xml builder there to create the xml script file for it and place it in the correct position. This will then work only on one particular installation setup, since paths are absolute. So how will this act when the path to the application will change, as it does with portable apps?
Otto Sykora
Basel, Switzerland
Try GameSpotting! Networks' ThunderBrowse (https://addons.mozilla.org/en-US/thunderbird/addon/5373) or BrowsrBounce (https://addons.mozilla.org/en-US/thunderbird/addon/6356)
First: Sorry to bring an old topic back, but I thought it might be useful to someone.
I figured out how to do it in Thunderbird 3.0 without any extensions with the following steps
Tools > Options
Advanced > Config Editor...
Filter: network.protocol-handler.warn-external.http
Name: network.protocol-handler.warn-external.http > true
Name: network.protocol-handler.warn-external.https > true
When you'll click on an HTTP or HTTPS link, you'll be prompted for a application to use. Just choose FirefoxPortable.exe from your PortableApps and check the option Remember my choice for http(s) links.
From now on Thunderbird will launch all links within Firefox Portable.
You can change this behavior at any time by going in your Options in the attachment section.
This is useful
My posts are old and likely no longer relevant.
Oh by the way, I noticed that this will not work if you have the AllowMultipleInstances parameter set to True in your FirefoxPortable.ini.
That shouldn't be a problem to most users, but I'm sure someone else might get this issue ;).
I've been looking for this for a really long time.
Thanks
There´s now a Thunderbird add-on that makes Thunderbird act as a browser. It´s called ThunderBrowse, and I´ve been using it for about 2 months now and I love it.It allows you to click on links, and the page opens in the same pane. TRY IT!
Thank you man. This is perfect.
Hi guys... 1st of all... THANKS for making our lifes better! LOL
I'm having problems here...
the "network.protocol-handler.warn-external.http" trick... and ThunderBrowse add-on ALMOST worked here... but when I try to click any link... got the msg:
"Profile is yet in use by another Firefox!" and it won't open...
IF the Firefox is CLOSED... it simple doesn't open... it appears to TRY to open.. but nothing happens... and if it's OPEN... I got that msg...
WORSE... the "network.protocol-handler.warn-external.http" changes make it impossible to restore to default browser... SO... I'm STUCK!!! LOL
HELPP ME GUYS!! !PLEEAASSE!!
1. ThunderbirdPortable -> Tools -> Options -> Attachments -> Incoming tab -> set http and https to be opened with your FirefoxPortable.exe.
2. ThunderbirdPortable -> Tools -> Options -> Advanced -> Config Editor...
network.protocol-handler.warn-external.http = true
network.protocol-handler.warn-external.https = true
3. Open FirefoxPortable.ini (if you have a modified .ini) and set AllowMultipleInstances=false
Strangely, this leaves my ability untouched to open portable Firefoxes from each direction (my secondary portable Firefox still has AllowMultipleInstances=true in its .ini).