---
sourceDocument: Australia IT Service Management
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/it-service-management

 Release :

    - australia

ft:locale :

    - en-US

ft:publication_title :

    - Australia IT Service Management

ft:clusterId :

    - itsm

bundleId :

    - itsm

workflow :

    - Technology


---

# Non-persistent VDI reference

# Non-persistent VDI parameters, scripts, and settings {#ariaid-title1}

Release version: Australia  
Updated May 12, 2026  
![](https://www.servicenow.com/docs/portal-asset/ico-clock) 2 minutes to read  
Find the Agent Client Collector mid-less installation command syntax, logon and logoff script file names and locations, and an installation command example when setting up a non-persistent VDI golden image.

## Agent Client Collector mid-less installation command {#non-persistent-vdi-scripts__section_install_command_syntax}

Run the following command on the reference device to install Agent Client Collector in mid-less mode for non-persistent VDI use. Replace each placeholder with the value provided in your ServiceNow instance under Agent Client CollectorAgent Download.

    msiexec /i <path-to-msi> /quiet /qn /norestart CONNECT_WITHOUT_MID="true" ACC_CNC="<your-acc-gateway>:443" REGISTRATION_KEY="<your-registration-key>" INSTANCE_URL="<your-instance-url>" LOCALUSERNAME="SYSTEM"

The following table describes each parameter.
{#non-persistent-vdi-scripts__table_install_command_params__entry__2}

| Parameter | Description |
|-|-|
| `/i <path-to-msi>` | Path to the Agent Client Collector MSI installer that you downloaded from the ServiceNow instance. |
| `/quiet /qn /norestart` | Installs the agent silently and prevents an automatic restart of the reference device after installation. |
| `CONNECT_WITHOUT_MID="true"` | Configures the agent to connect directly to the Agent Client Collector Cloud Native Connector (CNC) gateway without requiring a MID Server. |
| `ACC_CNC="<your-acc-gateway>:443"` | Hostname and port of your CNC gateway. Copy this value from the mid-less installation command in Agent Client CollectorAgent Download on your ServiceNow instance. |
| `REGISTRATION_KEY="<your-registration-key>"` | Registration key issued by your ServiceNow instance for this agent. |
| `INSTANCE_URL="<your-instance-url>"` | Fully qualified URL of your ServiceNow instance, for example, `https://<instance>.service-now.com`. |
| `LOCALUSERNAME="SYSTEM"` | Configures the agent service to run as the local `SYSTEM` account. This setting is required for non-persistent VDI monitoring. |
[ ]

{#non-persistent-vdi-scripts__table_install_command_params}

## Logon and logoff scripts {#non-persistent-vdi-scripts__section_logon_logoff_scripts}

The following table lists the file names, recommended locations, and purpose of the scripts that are required for non-persistent VDI sessions. Obtain these scripts from ServiceNow Customer Support before you configure the VDI pool.

If you place the PowerShell scripts in a location other than C:\\DEXScripts\\, update the corresponding .cmd wrapper to reference the new path.
{#non-persistent-vdi-scripts__table_logon_logoff_scripts__entry__4}

| File name | Type | Recommended location | Purpose |
|-|-|-|-|
| logon_script.ps1 | PowerShell | C:\\DEXScripts\\ | Restores the agent certificate from your persistent storage to the VDI when a session starts. Enables authentication without downloading a new certificate. |
| logon_script.cmd | CMD wrapper | Configured in your VDI management tool as the post-synchronization or session-start script | Calls logon_script.ps1. Update the path inside this file if you place the PowerShell script in a different location. |
| logoff_script.ps1 | PowerShell | C:\\DEXScripts\\ | Pushes residual metrics from the Agent Client Collector to the ServiceNow instance before the session disconnects. |
| logoff_script.cmd | CMD wrapper | Configured in your VDI management tool as the power-off or session-end script | Calls logoff_script.ps1. Update the path inside this file if you place the PowerShell script in a different location. |
[ ]

{#non-persistent-vdi-scripts__table_logon_logoff_scripts}

## Non-persistent VDI settings in acc.yml {#non-persistent-vdi-scripts__section_acc_yml_settings}

The following table lists the acc.yml settings that apply to a non-persistent VDI golden image. acc.yml is located at
C:\\ProgramData\\ServiceNow\\agent-client-collector\\.
{#non-persistent-vdi-scripts__table_acc_yml_settings__entry__3}

| Setting | Required value | Purpose |
|-|-|-|
| `persistence_type` | `non_persistent` | Defines that the agent runs on a non-persistent VDI. |
| `disable-asset` | `true` | Prevents the agent from re-using a single asset record across duplicate VDIs. Each duplicate VDI generates its own asset record on first start. |
| `agent-key-id` | Removed | Removed from the file before sealing the golden image so duplicate VDIs request a fresh key on first registration. |
[ ]

{#non-persistent-vdi-scripts__table_acc_yml_settings}

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