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Common Registry Keys for the Windows Client

  • Updated on Jun 22, 2026
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This article summarizes Windows registry keys and registry paths that are commonly used for deploying, managing, and troubleshooting the Cato Windows Client. It consolidates the registry locations, their purpose, and the related configuration or administrative action. The registry keys are used for remote access as well as User Awareness.

Registry Path/Key

Type

Purpose/Context

Value or Action

Additional Resources

HKEY_LOCAL_MACHINE\SOFTWARE\CatoNetworksVPN\dns_port

Value

Configure the Windows Client to use UDP 1337 instead of UDP 443

DWORD = 1337

Configure DNS Port

HKEY_LOCAL_MACHINE\SOFTWARE\CatoNetworksVPN\server_port

Value

Configure the Windows Client to use UDP 1337 instead of UDP 443

DWORD = 1337

Configure UDP Port

HKEY_LOCAL_MACHINE\SOFTWARE\CatoNetworksVPN\SubdomainForSeamlessAuth

Value

Define the Cato SSO subdomain for seamless authentication with Windows credentials

String = <your account name>

Subdomain for Seamless Authentication

HKEY_LOCAL_MACHINE\SOFTWARE\CatoNetworksVPN\LaunchAuthPageOnStartup

Value

Automatically launch the Client after initial installation for the next Windows user who logs in

DWORD = 1

Automatically Launch the Client

HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\

Registry path

Find the installed Windows Client uninstall entry

Search for Cato Client under this path

Uninstall Client using MsiExec

HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\<Cato Client key>\UninstallString

Value

Retrieve the uninstall command for the Windows Client

Copy the UninstallString value data

Uninstall Client using MsiExec

HKEY_LOCAL_MACHINE\SOFTWARE\CatoNetworksVPN\SeamlessAuthAllowUI

Value

Permits the use of additional manual authentication methods such as MFA

DWORD = 1

Authenticate Users Automatically with Windows Credentials

HKEY_LOCAL_MACHINE\SOFTWARE\CatoNetworksVPN\ConnectOnBoot

Value

Configure Cato Client to connect every time the device boots

DWORD = 1

Connect On Boot

HKEY_LOCAL_MACHINE\SOFTWARE\CatoNetworksVPN\InitialAlwaysOn

Value

Force Always-On to be enabled on new client installations

DWORD = 1

Initial Always On

HKEY_LOCAL_MACHINE\SOFTWARE\CatoNetworksVPN\PreLogin

Value

Enable Pre-login for a specific device

DWORD = 1

Enable Pre-Login

HKEY_LOCAL_MACHINE\SOFTWARE\CatoNetworksVPN\GREMode

Value

Enable the GRE tunnel for shared hosts

DWORD = 1

GRE Mode for Shared Hosts

HKEY_LOCAL_MACHINE\SOFTWARE\CatoNetworksVPN\LastUser\UpgradeMode

Value

Indicates which upgrade mode is configured on the device

DWORD = 0-2

Upgrade Mode

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