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can I install versions 3 and 4 on my PC at the same time?

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web page developer.

Can I install and run versions 3 and 4 on my PC at the same time? If so, how?

web page developer. Can I install and run versions 3 and 4 on my PC at the same time? If so, how?

Chosen solution

In theory it is possible. I haven't tried this myself since 3.5 came out, so I don't know whether it works the same with 4.

You need to install Firefox 3.6 and Firefox 4 to different program folders, and you need to create another profile under a different name (two running instances of Firefox cannot share a single profile). Finally, you want to edit your shortcuts to point to different profiles, and one of them should have the -no-remote startup switch.

More info:

Opening a new instance of your Mozilla application with another profile - MozillaZine Knowledge Base

is it possible to run both firefox 3 and 4 in the same computer (windows) | Firefox Support Forum | Firefox Help

How run Version 4 and Version 3 simultaneously? • mozillaZine Forums

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Installed Plug-ins

  • Adobe PDF Plug-In For Firefox and Netscape 10.0.1
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Shockwave Flash 10.2 r153
  • Next Generation Java Plug-in 1.6.0_22 for Mozilla browsers
  • Npdsplay dll
  • DRM Store Netscape Plugin
  • DRM Netscape Network Object

Application

  • User Agent: Mozilla/5.0 (Windows NT 5.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1

More Information

jscher2000
  • Top 10 Contributor
8837 solutions 72222 answers

Chosen Solution

In theory it is possible. I haven't tried this myself since 3.5 came out, so I don't know whether it works the same with 4.

You need to install Firefox 3.6 and Firefox 4 to different program folders, and you need to create another profile under a different name (two running instances of Firefox cannot share a single profile). Finally, you want to edit your shortcuts to point to different profiles, and one of them should have the -no-remote startup switch.

More info:

Opening a new instance of your Mozilla application with another profile - MozillaZine Knowledge Base

is it possible to run both firefox 3 and 4 in the same computer (windows) | Firefox Support Forum | Firefox Help

How run Version 4 and Version 3 simultaneously? • mozillaZine Forums

In theory it is possible. I haven't tried this myself since 3.5 came out, so I don't know whether it works the same with 4. You need to install Firefox 3.6 and Firefox 4 to different program folders, and you need to create another profile under a different name (two running instances of Firefox cannot share a single profile). Finally, you want to edit your shortcuts to point to different profiles, and one of them should have the -no-remote startup switch. More info: [http://kb.mozillazine.org/Opening_a_new_instance_of_your_Mozilla_application_with_another_profile Opening a new instance of your Mozilla application with another profile - MozillaZine Knowledge Base] [http://support.mozilla.com/en-US/questions/795726 is it possible to run both firefox 3 and 4 in the same computer (windows) | Firefox Support Forum | Firefox Help] [http://forums.mozillazine.org/viewtopic.php?f=38&t=2179397 How run Version 4 and Version 3 simultaneously? • mozillaZine Forums]
Svetlana 76 solutions 915 answers

Yes, this setup works with Firefox 4 for me.

Yes, this setup works with Firefox 4 for me.

Question owner

Thank you very much. I appreciate the very quick response and the additional resource links. Excellent help!

Thank you very much. I appreciate the very quick response and the additional resource links. Excellent help!