# Install Browser Extension

Installation guide for the Psono browser extensions for Chrome, Edge, or Firefox.

To install one of our browser extensions, follow the appropriate guide below.

# Install Chrome extension

Open your Chrome browser and visit the following url:

chrome.google.com/webstore/detail/psonopw/eljmjmgjkbmpmfljlmklcfineebidmlo (opens new window)

# Install Edge extension

Open your Edge browser and visit the following url:

microsoftedge.microsoft.com/addons/detail/psono-free-password-man/abobmepfpbkapdlmfhnnkebcnhgeccbm (opens new window)

# Install Firefox extension

Open your Firefox browser and visit the following url:

addons.mozilla.org/firefox/addon/psono-pw-password-manager/ (opens new window)

# Install company wide

To automatically install the browser extension for your users, use Group Policy or follow the Microsoft Intune guide.

# Force-install with Group Policy

Use Windows Group Policy to automatically install Psono in Chrome, Edge, and Firefox, including Firefox ESR. While the policy is applied, users cannot disable or remove the extension through the browser's extension manager.

# Requirements

Windows computers joined to your Active Directory domain, with the browsers already installed.
Access to the Group Policy Management Console and permission to create or edit a Group Policy Object (GPO).
Internet access from the target computers to the browsers' extension stores and download services.

# Prepare Group Policy

Download and extract the policy templates for the browsers you want to manage:

Browser	Download	ADMX files
Chrome	Google Chrome policy templates (opens new window)	`google.admx`, `chrome.admx`
Edge	Microsoft Edge policy templates (opens new window) — select the policy files download	`msedge.admx`
Firefox	Mozilla policy templates (opens new window) — download the policy templates ZIP	`mozilla.admx`, `firefox.admx`

Copy the listed .admx files to your domain's existing Central Store:
```
\\&lt;domain>\SYSVOL\&lt;domain>\Policies\PolicyDefinitions
```
Copy the matching .adml files from the archive's language folder into the same language subdirectory in the Central Store, for example PolicyDefinitions\en-US.

If your domain does not use a Central Store, copy the .admx files to %WINDIR%\PolicyDefinitions on the computer used to edit Group Policy, and the .adml files to its matching language subdirectory.
Open Group Policy Management (gpmc.msc).
Right-click the organizational unit (OU) containing the target computer accounts, select Create a GPO in this domain, and Link it here, and name it Psono Browser Extensions. You can also edit an existing GPO linked to those computers.
Right-click the GPO and select Edit. Configure the browsers you use with the settings below.

Add Psono alongside any extensions already managed by these policies. Keep the existing list entries or JSON settings when adding the values below.

# Chrome

Navigate to Computer Configuration > Policies > Administrative Templates > Google > Google Chrome > Extensions.
Open Configure the list of force-installed apps and extensions (ExtensionInstallForcelist).

Select Enabled, click Show, and add this value on a new row:

eljmjmgjkbmpmfljlmklcfineebidmlo;https://clients2.google.com/service/update2/crx

Click OK to save the list, then OK to save the policy.

# Edge

Navigate to Computer Configuration > Policies > Administrative Templates > Microsoft Edge > Extensions.
Open Control which extensions are installed silently (ExtensionInstallForcelist).

Select Enabled, click Show, and add this value on a new row:

abobmepfpbkapdlmfhnnkebcnhgeccbm;https://edge.microsoft.com/extensionwebstorebase/v1/crx

Click OK to save the list, then OK to save the policy.

# Firefox

These steps apply to both Firefox and Firefox ESR.

Navigate to Computer Configuration > Policies > Administrative Templates > Mozilla > Firefox > Extensions.
Open Extension Management (ExtensionSettings) and select Enabled.

Paste this JSON into the policy's configuration field:

{
  "{3dce78ca-2a07-4017-9111-998d4f826625}": {
    "installation_mode": "force_installed",
    "install_url": "https://addons.mozilla.org/firefox/downloads/latest/psono-pw-password-manager/latest.xpi"
  }
}

Enter this object directly, without a policies or ExtensionSettings wrapper. The braces in the extension ID are part of the ID.

Click OK to save the policy.

# Apply and verify

Wait for Group Policy to refresh, or run the following command in an elevated Command Prompt on a target computer:
```
gpupdate /force
```
Fully close and reopen the browser, then allow time for the extension to download.

Check the browser's policy page:

Browser	Policy page	What to check
Chrome	`chrome://policy`	Click Reload policies. `ExtensionInstallForcelist` should contain the Chrome value above and have status OK.
Edge	`edge://policy`	Click Reload Policies. `ExtensionInstallForcelist` should contain the Edge value above and have status OK.
Firefox	`about:policies`	Under Active, `ExtensionSettings` should contain Psono's ID with `installation_mode` set to `force_installed`. Check Errors for policy errors.

Open chrome://extensions, edge://extensions, or about:addons. Confirm that Psono is installed and enabled, and that the user cannot disable or remove it.

# Troubleshooting

The GPO is not applied: Run gpresult /scope computer /r in an elevated Command Prompt on the target computer. Check that the GPO appears under Applied Group Policy Objects, that it is linked to the computer's OU, and that its security filtering includes the target computer.
The browser reports an invalid policy: Check the copied value and, for Firefox, the JSON syntax and the braces around the extension ID.
The policy is present but Psono is not installed: Check that the computer can reach the extension store and download URL. In Chrome and Edge, also check for an existing ExtensionSettings policy that overrides ExtensionInstallForcelist for Psono.

# Policy references

# Configuration

To preconfigure the Psono server URL, authentication methods, or other settings, follow Configure Browser Extension.

← 4. Finalize Install Mobile App (optional) →