Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Can I run both 56.0.2 (64-bit) and the new Quantum on same PC?

  • 1 reply
  • 1 has this problem
  • 2 views
  • Last reply by Mkll

Avery Sloan
Avery Sloan
more options

I want to test the new Quantum 64 bit without removing my 56.0.2 (64-bit) on a Windows 7 PC. My concern is that I will lose my extensive cache, bookmarks, useful plug-ins and add-ons, etc., if I install the new Quantum and it overwrites everything.

I want to test the new Quantum 64 bit without removing my 56.0.2 (64-bit) on a Windows 7 PC. My concern is that I will lose my extensive cache, bookmarks, useful plug-ins and add-ons, etc., if I install the new Quantum and it overwrites everything.

All Replies (1)

Mkll
Mkll
more options

Yes, you can! Download and install them in separate directories. Then, launch each one individually with the -p flag to set up different profiles for each version (or at least one for testing). Then, after you have two separate profiles, create an icon for each on your desktop. Right click on the icon and select properties. In the 'target' field, add the following flags. c:\Programs\Firefox 56\firefox.exe -p Profile1 -no-remote c:\Programs\Firefox 57\firefox.exe -p Profile2