Firefox Portable Run Multiple Instances (portableapps.com)

  1. Copy "\FirefoxPortable\Data\settings\FirefoxPortableSettings.ini" to "\FirefoxPortable"  (the same folder with FirefoxPortable.exe)
  2. Add content and saveAllowMultipleInstances=false
  3. Creating a shortcut to "FirefoxPortable.exe" with startup parameters "-no-remote"

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