Bookmarks (JSON on one line)
Verified with Mozilla Firefox v8.2 — updated on September 2, 2026
Supported on: Firefox 95 or later, Firefox 91.4 ESR or later
Path in the GPO console
Computer Configuration\Administrative Templates\Mozilla\Firefox\Bookmarks User Configuration\Administrative Templates\Mozilla\Firefox\Bookmarks Description
If this policy is enabled, you can use JSON to configure bookmarks, including [] to clear all bookmarks. If this policy is disabled or not configured, the individual bookmark policies are used. If this policy is enabled along with individual bookmarks, those bookmarks will not be added. This policy has no effect on Managed Bookmarks. For detailed information on the JSON, see https://firefox-admin-docs.mozilla.org/reference/policies/bookmarks/.
Registry
HKLM
Software\Policies\Mozilla\Firefox HKCU
Software\Policies\Mozilla\Firefox Export Builder
BETAConfigure the state, scope and options, then generate .reg, PowerShell, Intune and SCCM outputs — or add the setting to a multi-setting collection.
These exports write the registry — this is not a managed GPO. ⓘ
Applying both scopes creates an ambiguous configuration (computer takes precedence over user). Only do this intentionally.
.reg file
Windows Registry Editor Version 5.00
; Exported from gporais.com
; Policy: Bookmarks (JSON on one line)
; State: Enabled
; Scope: Computer (HKLM)
; Supported on: Firefox 95 or later, Firefox 91.4 ESR or later
[HKEY_LOCAL_MACHINE\Software\Policies\Mozilla\Firefox]
"Bookmarks"=""More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Bookmarks (JSON on one line)
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Firefox 95 or later, Firefox 91.4 ESR or later
$path = 'HKLM:\Software\Policies\Mozilla\Firefox'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'Bookmarks' -Value '' -Type StringIntune XML
No direct Policy CSP / OMA-URI mapping for this policy. Use the Intune Remediation tab, or ingest the ADMX in Intune.Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Bookmarks (JSON on one line)
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Firefox 95 or later, Firefox 91.4 ESR or later
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Mozilla\Firefox' -Name 'Bookmarks' -Expected '' -Kind String)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Bookmarks (JSON on one line)
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Firefox 95 or later, Firefox 91.4 ESR or later
$path = 'HKLM:\Software\Policies\Mozilla\Firefox'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'Bookmarks' -Value '' -Type StringSCCM scripts
# Exported from gporais.com
# Policy: Bookmarks (JSON on one line)
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Firefox 95 or later, Firefox 91.4 ESR or later
# SCCM Configuration Item guidance:
# Create a Configuration Item of type "Setting: Script".
# Discovery script: use the Detection script below.
# Remediation script: use the Remediation script below.
# Compliance rule: the Discovery script output equals 'Compliant'.
# === Detection script ===
# Exported from gporais.com
# Policy: Bookmarks (JSON on one line)
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Firefox 95 or later, Firefox 91.4 ESR or later
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Mozilla\Firefox' -Name 'Bookmarks' -Expected '' -Kind String)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Bookmarks (JSON on one line)
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Firefox 95 or later, Firefox 91.4 ESR or later
$path = 'HKLM:\Software\Policies\Mozilla\Firefox'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'Bookmarks' -Value '' -Type StringBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.