Ff Pc Regedit May 2026

| Purpose | Registry Path | |---------|----------------| | Policy settings (HKLM) | HKLM\SOFTWARE\Policies\Mozilla\Firefox | | Policy settings (HKCU) | HKCU\SOFTWARE\Policies\Mozilla\Firefox | | File associations (e.g., .html) | HKCR\FirefoxHTML\shell\open\command | | Uninstall info | HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox | | Default browser setting | HKCU\SOFTWARE\Microsoft\Windows\Shell\Associations\UrlAssociations\http\UserChoice |

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.

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

Sometimes, an automatic update breaks a critical web application. To freeze Firefox at its current version: ff pc regedit

Result: Firefox will stop checking for updates across all profiles on that PC.

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: | Purpose | Registry Path | |---------|----------------| |

Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox]
"DisablePocket"=dword:00000001
"DisableTelemetry"=dword:00000001

| Purpose | Registry Path | |---------|----------------| | Policy settings (enterprise) | HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox | | User preferences (overrides) | HKEY_CURRENT_USER\SOFTWARE\Policies\Mozilla\Firefox | | Install path detection | HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Mozilla Firefox | | Default browser settings | HKEY_CURRENT_USER\SOFTWARE\Clients\StartMenuInternet\Firefox-* | | File associations (.htm, .html, etc.) | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts | Before editing, you must find the correct path