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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
---
$schema: moz://mozilla.org/schemas/glean/pings/2-0-0
default-agent:
description: >
This opt-out ping is sent from the Default Agent, which is a Windows-only
Firefox Background Task that is registered during Firefox installation with
the Windows scheduled tasks system so that it runs automatically every 24
hours, whether Firefox is running or not.
Opting out of telemetry is handled via the pref value being copied to the
registry so that the Default Agent can read it without needing to work with
profiles. Relevant policies are consulted as well. The agent also has its own
pref, `default-agent.enabled`, which if set to false disables all agent
functionality, including generating this ping.
Each installation of Firefox has its own copy of the agent and its own
scheduled task which shares a common `LastPingSentAt` user registry key with
other installations. Installations race to send a single ping per 24 hour
window per installing user. If multiple operating system-level users are all
using one copy of Firefox, only one scheduled task will have been created and
only one ping will be sent, even though the users might have different
default browser settings. If multiple users have installed Firefox then each
installing user will have a scheduled task and ping.
Additional information for the Default Agent can be found in the
[Default Browser Agent docs](https://firefox-source-docs.mozilla.org/toolkit/mozapps/defaultagent/default-browser-agent/index.html).
include_client_id: false
send_if_empty: false
reasons:
daily_ping: |
The ping was sent as part of the daily scheduled Default Agent run.
bugs:
- https://bugzilla.mozilla.org/show_bug.cgi?id=1838755
data_reviews:
- https://bugzilla.mozilla.org/show_bug.cgi?id=1621293
notification_emails:
- install-update@mozilla.com
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