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Installing DEX on your local machine › Configure › Digital End-User Experience › IT Service Management
Release: Australia · Updated: 2026-03-12 · Official documentation · View source

Install ACC for DEX on Windows

Install Agent Client Collector (ACC) to work with Digital End-User Experience (DEX) to monitor and collect data, provide insights into system performance, identify issues, and enable proactive maintenance.

Before you begin

Install the ITOM Cloud Services plugin.

Create an agent registration key.

Role required: agent_client_collector_admin

Procedure

  1. Retrieve the publicly accessible gateway URL, based on your location.

    • AMER (Americas): itomcnc-prod-gateway.amer.sncapps.service-now.com:443
    • EMEA (Europe): itomcnc-prod-gateway.emea.sncapps.service-now.com:443
    • APAC (Asia Pacific): itomcnc-prod-gateway.apac.sncapps.service-now.com:443
    • On the Windows server where the agent is installed, enter the following command:
    msiexec /i <msi_file_path> /quiet /qn /norestart CONNECT_WITHOUT_MID="true" ACC_CNC="<gateway_endpoint>" REGISTRATION_KEY="<registration_key>" INSTANCE_URL="https://<instance_url>"

    The following table shows the parameter values in the command.

ParameterDescription
CONNECT\_WITHOUT\_MIDSpecify true to enable MID-less Agent Client Collector installation. If you don't specify a value, the regular MID Server websocket installation is invoked.
ACC\_CNCSpecify a public gateway endpoint for Agent Client Collector.
REGISTRATION\_KEYActive and valid registration key for the agent to communicate with.
INSTANCE\_URLServiceNow instance that the agent is registered with.
ACC\_ALLOW\_LISTOptional string. To disable the allow list, set ACC_ALLOW_LIST=0. By default, the allow list is enabled.Note: Disabling the allow list compromises your system's security and is intended as a temporary measure while you’re updating the allow list. After completing the update, enable the allow list by setting ACC_ALLOW_LIST=1.
ACC\_VALIDATE\_SIGOptional string. To disable verification of the installer certification validation, set ACC_VALIDATE_SIG=0 that you can add to disable the verification of the installer certification validation. By default, validation is enabled.Note: Disable the certification validation only when using non-standard signature validation tools.

  1. Start the Agent Client Collector service using the default ServiceNow user role created during this installation.

    The default ServiceNow user role has the following privileges:

    • Performance Monitor: Viewing all performance counters in the system.
    • Log on as a service: Starting network services and services that run continuously, even when no one is logged in to the console.
    • Debug program: Monitoring the installed applications and collecting in-depth metrics and remedial actions, such as restart and stop.

    • To collect DEX metrics, restart the ACC service using one of the following methods:

    • Add Remote Desktop user to ServiceNow user.

    • Run as a local system account user.
    • Run as a managed group user.
    • Restart the Agent Client Collector service.

  2. Run ACC as a local system account user
    To fetch the complete playbook content data for a Windows device, the Agent Client Collector (ACC) must run as a local system account.

  3. Run ACC as a managed group user
    Run Agent Client Collector (ACC) from a managed group account to meet your organization's security, manageability, and auditability requirements.

Parent Topic:Installing DEX on your local machine