Kerberos authentication
Verified with Citrix Workspace App 26.3.10 — updated on July 10, 2026
Supported on: All Citrix Workspace supported platforms
Path in the GPO console
User Configuration\Administrative Templates\Citrix Components\Citrix Workspace\User authentication Description
Use this policy to control how the client uses Kerberos to authenticate the user to the remote application or desktop. When enabled, this policy allows the client to authenticate the user using the Kerberos protocol. Kerberos is a Domain Controller authorised authentication transaction that avoids the need to transmit the real user credential data to the server. When disabled, the client will not attempt Kerberos authentication. Troubleshooting: The machine running the client and the server running the remote application must be in domains that have a trust relationship. The Domain Controller must be aware that the Citrix XenApp server will be performing a full user logon (interactive logon) using Kerberos. This is configured using the "Trust for Delegated Authentication" settings on the Domain Controller. When connecting using the Web Interface, the Web Interface server must be aware that the client will connect using Kerberos authentication. This is necessary because by default the Web Interface server will use an IP address for the destination server whereas Kerberos authentication requires a Fully Qualified Domain Name. Both client and server machines must have correctly registered DNS entries. This is necessary because endpoints will authenticate each other during connection.
Registry
HKCU
Software\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Kerberos Value name: SSPIEnabled
Enabled: SSPIEnabled = true,false
Disabled: SSPIEnabled = false
This policy sets several registry values:
SSOnUserSetting Local Credentials Enabled:
SSOnUserSetting = true,false EnableSSOnThruICAFile Local Credentials Enabled:
EnableSSOnThruICAFile = true 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. ⓘ
.reg file
Windows Registry Editor Version 5.00
; Exported from gporais.com
; Policy: Kerberos authentication
; State: Enabled
; Supported on: All Citrix Workspace supported platforms
[HKEY_CURRENT_USER\Software\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Kerberos]
"SSPIEnabled"="true,false"
[HKEY_CURRENT_USER\Software\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Local Credentials]
"SSOnUserSetting"="true,false"
"EnableSSOnThruICAFile"="true"More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Kerberos authentication
# State: Enabled
# Supported on: All Citrix Workspace supported platforms
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
$path = 'HKCU:\Software\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Kerberos'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'SSPIEnabled' -Value 'true,false' -Type String
$path = 'HKCU:\Software\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Local Credentials'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'SSOnUserSetting' -Value 'true,false' -Type String
Set-ItemProperty -Path $path -Name 'EnableSSOnThruICAFile' -Value 'true' -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: Kerberos authentication
# State: Enabled
# Supported on: All Citrix Workspace supported platforms
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
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
}
$checks = @(
(Test-RegistryValue -Path 'HKCU:\Software\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Kerberos' -Name 'SSPIEnabled' -Expected 'true,false' -Kind String)
(Test-RegistryValue -Path 'HKCU:\Software\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Local Credentials' -Name 'SSOnUserSetting' -Expected 'true,false' -Kind String)
(Test-RegistryValue -Path 'HKCU:\Software\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Local Credentials' -Name 'EnableSSOnThruICAFile' -Expected 'true' -Kind String)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Kerberos authentication
# State: Enabled
# Supported on: All Citrix Workspace supported platforms
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
$path = 'HKCU:\Software\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Kerberos'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'SSPIEnabled' -Value 'true,false' -Type String
$path = 'HKCU:\Software\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Local Credentials'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'SSOnUserSetting' -Value 'true,false' -Type String
Set-ItemProperty -Path $path -Name 'EnableSSOnThruICAFile' -Value 'true' -Type StringSCCM scripts
# Exported from gporais.com
# Policy: Kerberos authentication
# State: Enabled
# Supported on: All Citrix Workspace supported platforms
# 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: Kerberos authentication
# State: Enabled
# Supported on: All Citrix Workspace supported platforms
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
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
}
$checks = @(
(Test-RegistryValue -Path 'HKCU:\Software\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Kerberos' -Name 'SSPIEnabled' -Expected 'true,false' -Kind String)
(Test-RegistryValue -Path 'HKCU:\Software\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Local Credentials' -Name 'SSOnUserSetting' -Expected 'true,false' -Kind String)
(Test-RegistryValue -Path 'HKCU:\Software\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Local Credentials' -Name 'EnableSSOnThruICAFile' -Expected 'true' -Kind String)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Kerberos authentication
# State: Enabled
# Supported on: All Citrix Workspace supported platforms
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
$path = 'HKCU:\Software\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Kerberos'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'SSPIEnabled' -Value 'true,false' -Type String
$path = 'HKCU:\Software\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Local Credentials'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'SSOnUserSetting' -Value 'true,false' -Type String
Set-ItemProperty -Path $path -Name 'EnableSSOnThruICAFile' -Value 'true' -Type StringBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.