Note: This article covers Firefox versions prior to Firefox 60 ESR. To deploy for enterprise environments in Firefox 60 or later, see.

Many Mac users report about the ever-deteriorating performance of Firefox, which introduces a fair share of inconvenience and frustration in their browsing experience. Stumbling performance of Firefox is especially bothersome for those web surfers who are not used to messing around with settings but want to find out why their, say, powerful MacBook Pro’s are so incomprehensively sluggish. Run the Firefox browser. When you run Firefox for the first time, you will be given the choice to make Firefox your default browser. Click Yes if you want Firefox to automatically serve as your browser. Note that when Mac users first open Firefox, a prompt will appear inquiring about whether you in fact wish to open it. With its industry-leading features, Firefox is the choice of Web development professionals and casual users alike. The Web, as it's meant to be experienced. Faster than Safari. Firefox stays speedy when other browsers become sluggish. More private than Chrome. Firefox respects your privacy by minimizing suggestive pop-ups. Bursting with features. Firefox is designed to ensure that only one copy of Firefox is using a profile at a single time. To ensure this, it places special lock files in the profile directory. In rare cases, Firefox could have left behind the lock file when it crashed or quit abnormally. You can delete these lock files yourself.

Choose a Firefox variant Rapid Release (RR) Mozilla publishes a new version with incremented main version number, new features, and bug fixes every six weeks (and, as needed, additional security releases in between). On the day a major version is released, in most cases (see below for an exception) Mozilla stops providing bug fixes for the previous one. For the planned dates for upcoming releases, see the column 'release date' in the table in the Mozilla wiki.

Extended Support Release (ESR) Every seventh major version of Firefox is declared an Extended Support Release. These versions get serious bugs fixed in minor versions, for 54 weeks (nine of the six-week release cycles). There is an overlap of 12 weeks (two release cycles) between two successive ESR releases, during which both ESR releases get bug fixes. The major ESR releases so far have been versions 10, 17, 24, 31, 38, 45 and 52. This cadence will be proken according to information in Devember 2017, and 60 will be the next ESR Many enterprises and other organizations with centrally-managed computing environments prefer to use the ESR rather than the RR versions, because then they need to test for compatibility only every 42 weeks instead of every 6 weeks. Also if there are any issues, they have 12 weeks additional time (the overlap between two ESR releases) to find a solution (in addition to the 6 weeks that they can get by testing the beta version). Note that there can be undesired side effects if you switch from a RR version to an earlier ESR version, for example from version 26-RR back to 24.2-ESR, even if they were published on the same day.

The reason for this is that often new features are built into the RR versions for test purposes before they are finished, but disabled by preference settings. Eventually Mozilla decides to toggle the feature on in a certain version. If you then downgrade to a previous version, all users keep their latest settings in their profile directories. Thus the option is now switched on, although the feature does not yet fully work in that version. If you want to switch from RR to ESR, you should do so when a new ESR release comes out.

How to change text highlight color in adobe for mac. Installation • Get the full, redistributable installer from (RR) or (ESR) rather than the 'stub' or 'downloader' that you get by clicking the 'Download' button. • Install using the software distribution method of your choice. The command line option for a silent install is -ms. • Optionally you can specify an INI file, for example to disable the placement of shortcuts and the installation of the MaintenanceService; see. Configuration • Find the Firefox program directory where the Firefox executable is located.