Ever tried to start Firefox while is it is running? Doesn’t work, you will get an error saying Firefox is already running. I have seen a trick over at CyberNet involving installing a portable version of Firefox, but that seems to be a lot of work. Plus, I already have several versions of Firefox installed. So I did a little more search and came across the mozillaZine KB article: Command line arguments
The easiest way to take advantage of this is to modify your short-cuts. The short cut should be formatted as such: “Firefox.exe” -p “{PROFILE}” -no-remote (note: substitute the name of your profile for {PROFILE} or omit to launch the profile manger instead). I have setup and can now run/test Firefox 2.0.0.20, Firefox 3.0.7 and Firefox 3.5beta4pre at the same time running on their own profiles.
Notes: this tweak does not apply to does not apply to Mozilla Suite/SeaMonkey 1.x. You can also run multiple profiles of the same version of Firefox as well. This can be helpful when you want to see how something behaves with a clean (no add-ons) profile (or to see how quickly a Firefox with a clean profile restarts).
Awesome. Thank-you for the tip! I should have been doing this ages ago…
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Hello,
Where should I put this code?
““Firefox.exe” -p “{PROFILE}” -no-remote”
Thanks
Hello,
Now I figure it out, put the code on the Target of you desktop Shortcut
“C:\Program Files (x86)\Old Mozilla Firefox\firefox.exe” -P Profile -no-remote
Thanks!
Looks like the profile manager UI is going away:
https://bugzilla.mozilla.org/show_bug.cgi?id=214675
Thanks for the info. Yep, looks like with the next major Firefox release after Firefox 4.
“C:\Program Files (x86)\Old Mozilla Firefox\firefox.exe” -P Profile -no-remote……are the quotations and the (x86) necessary or could I rename the expiremental browser mike Roch\firefox.exe -P Profile -no-remote, for example if the other version is still regular firefox
If you are using a 64-bit version of Windows the default location is C:\Program Files (x86)\ where as 32-bit version of Windows would just be C:\Program Files . I do believe you still need the quotes in the Windows shortcut for the location portion and then add the parameters at the end.
So I have a 32 bit version how do I reformat to name this and put quotations on name “C:\Program Files\old firefox\firefox.exe”-P{profile}-no-remote. I can only change the firefox.exe and such but can not change the whole please be patient with me I am a novice
am I renaming the path?
Your ‘Target should look similar to this:
“C:\Program Files (x86)\Old Mozilla Firefox\firefox.exe” -P Profile -no-remote
note in this example Profile is the name of your profile.