Set the maximum number of WebSocket connections per server
Verified with Windows 11 25H2 — updated on July 23, 2026
Supported on: At least Internet Explorer 10.0
Path in the GPO console
Computer Configuration\Administrative Templates\Windows Components\Internet Explorer\Security Features\AJAX User Configuration\Administrative Templates\Windows Components\Internet Explorer\Security Features\AJAX Description
This policy setting allows you to change the default limit of WebSocket connections per server. The default limit is 6; you can select a value from 2 through 128. If you enable this policy setting, Internet Explorer uses the WebSocket connection limit that you set with this policy setting. If you disable or do not configure this policy setting, Internet Explorer uses the default limit of 6 WebSocket connections per server.
Registry
HKLM
Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_WEBSOCKET_MAXCONNECTIONSPERSERVER HKCU
Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_WEBSOCKET_MAXCONNECTIONSPERSERVER 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: Set the maximum number of WebSocket connections per server
; State: Enabled
; Scope: Computer (HKLM)
; Supported on: At least Internet Explorer 10.0
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_WEBSOCKET_MAXCONNECTIONSPERSERVER]
"iexplore.exe"=dword:00000006More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Set the maximum number of WebSocket connections per server
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: At least Internet Explorer 10.0
$path = 'HKLM:\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_WEBSOCKET_MAXCONNECTIONSPERSERVER'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'iexplore.exe' -Value 6 -Type DWordIntune 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: Set the maximum number of WebSocket connections per server
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: At least Internet Explorer 10.0
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_WEBSOCKET_MAXCONNECTIONSPERSERVER' -Name 'iexplore.exe' -Expected 6 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Set the maximum number of WebSocket connections per server
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: At least Internet Explorer 10.0
$path = 'HKLM:\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_WEBSOCKET_MAXCONNECTIONSPERSERVER'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'iexplore.exe' -Value 6 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Set the maximum number of WebSocket connections per server
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: At least Internet Explorer 10.0
# 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: Set the maximum number of WebSocket connections per server
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: At least Internet Explorer 10.0
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_WEBSOCKET_MAXCONNECTIONSPERSERVER' -Name 'iexplore.exe' -Expected 6 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Set the maximum number of WebSocket connections per server
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: At least Internet Explorer 10.0
$path = 'HKLM:\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_WEBSOCKET_MAXCONNECTIONSPERSERVER'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'iexplore.exe' -Value 6 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.