Notice of Non-Affiliation and Disclaimer
Portapps is not affiliated, associated, authorized, endorsed by, or in any way officially connected with Firefox™ ESR, or any of its subsidiaries or its affiliates.
The official Firefox™ ESR website can be found at https://www.mozilla.org/en-US/firefox/organizations.
The name Firefox™ ESR as well as related names, marks, emblems and images are registered trademarks of their respective owners.
Firefox™ ESR portable app made with Portapps.
Extended Support Release of Firefox web browser developed by The Mozilla Foundation.
|License||Mozilla Public License 2.0|
Download and install the latest portable setup where you want then run
If you have already installed Firefox™ ESR from the original setup, move the following files :
firefox-esr-portable.exe and remove Firefox™ ESR from your computer.
For an upgrade, simply download and install the latest portable setup.
Some modifications have been made in this version of Firefox™ ESR through policies to ensure portability :
- Multilingual : All languages are included in
app\langsand can be enabled in config file (see below).
- Disable updater : Firefox™ ESR updates are turned off.
- Don’t check default browser : Stops Firefox™ ESR from checking if it is the default browser at startup.
- ‘Know your rights’: Don’t show on first run.
- WhatsNew: Don’t show WhatsNew on first run after every update.
- Profile: Profile path is overrided to
data\profilefolder (see below).
Firefox™ ESR portable can be configured through the main YAML configuration file :
app: profile: default multiple_instances: false disable_telemetry: false disable_firefox_studies: false locale: en-US
profile: Name of the profile created in
multiple_instances: Allow multiple instances (default
disable_telemetry: If enabled, Firefox™ ESR telemetry is not uploaded (default
disable_firefox_studies: If enabled, Firefox™ ESR will never run SHIELD studies or do Heartbeat surveys. (default
locale: Locale located in
app\langscan be used to change UI language without
JavasScript must be enabled to allow the generation of dynamic download links.
Otherwise you can download directly from the releases page on GitHub.