Mozilla Updater

The Mozilla Update is a feature that automatically keeps your computer up-to-date with the latest releases of FireFox, Thunderbird and SeaMonkey.

Known Update Targets

Official Ways for Disabling

Mozilla provides an official way to disable updates, see [1]. To disable just Firefox updates see [2].

Support by Update Freezer


Update Freezer configures Firefox updates for all users in the system (globally) by locking update settings. It creates and manages two files:

If user chooses 'Firefox Defined' option in Update Freezer UI then these files are deleted and update settings are unlocked.

Note: If Update Freezer shows 'Firefox Defined' for Firefox then update settings are not locked. In this case current update status can be determined and managed manually using Options > Advanced > Update tab of Firefox, see [2].

Note: Restart Firefox after changing updater status in the Update Freezer in order to settings take effect.

Both 32-bit and 64-bit Windows are supported.

Drawbacks of Update Freeze

By disabling automated updates you have a risk to stay unprotected from vulnerabilities covered by regular maintenance updates of software.


  1. What is Mozilla Update?
  2. Updating Firefox