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
Here is the list of known issues with this portapp:
JavasScript must be enabled to allow the generation of dynamic download links.
Otherwise you can download directly from the releases page on GitHub.