User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-GB; rv:22.214.171.124) Gecko/20061206 Firefox/126.96.36.199 Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-GB; rv:188.8.131.52) Gecko/20061206 Firefox/184.108.40.206 Hello, I run one copy of Firefox and would like to run a second with a different profile. I already have a number of different profiles, so I tried to start Firefox by using these incantations: $ firefox -ProfileManager $ firefox -ProfileManager -no-remote $ firefox -ProfileManager --no-remote But whatever I tried, it would not come up with the profile manager but instead load the home page. Also, there was no individual session, but it was just another window of the already-running session. What gives? Reproducible: Always Steps to Reproduce: 1. 2. 3. I searched mozilla.org and mozilla.com as well as the Firefox installation and its online help for how to run a separate session to no avail. NB: Every web developer (at least!) needs this functionality.
-no-remote wasn't supported until 2.0, for 1.5.0.x you need to |set MOZ_NO_REMOTE=1| first.