You can preconfigure Firefox via Registry after a silent install (-ms flag) by importing .reg files with policy keys before first launch — useful for IT deployment scripts.
Example .reg to disable Pocket and telemetry:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox] "DisablePocket"=dword:00000001 "DisableTelemetry"=dword:00000001ff pc regedit
ff pc regedit is a niche but powerful intersection — Firefox on Windows respects the Registry only for enterprise policies and OS integration, not for user data. That makes it cleaner than Chromium browsers but less tweakable there. The real magic is in about:config and the profile folder. You can preconfigure Firefox via Registry after a
Firefox key exists, delete it entirely.Before editing, you must find the correct path. Firefox stores its machine-wide policies in a specific hive.
Open Regedit:
Press Win + R, type regedit, and hit Enter. ff pc regedit is a niche but powerful
The Main Path for Firefox Policies:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox
Note: If the Mozilla\Firefox keys do not exist, you must create them manually.
For 32-bit Firefox on 64-bit Windows:
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Policies\Mozilla\Firefox
Delete the whole key:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla