---
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


---

# Install ACC on the reference device

# Install Agent Client Collector on a non-persistent VDI reference device {#ariaid-title1}

Release version: Australia  
Updated May 12, 2026  
![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read  
Install Agent Client Collector (ACC) on the reference device used to create the non-persistent VDI golden image. The mid-less installation method, combined with the `LOCALUSERNAME="SYSTEM"`
parameter and a non-persistent setting in acc.yml, configures the agent to operate correctly across copied VDI sessions.

## Before you begin

Verify that the reference device has the following before creating the golden image:

* Digital End-User Experience Application and Device Health 3.2.3 or higher.
* Access to create and configure the non-persistent VDI golden image.
* Administrator access on the reference device.
* Network access from the reference device to your Agent Client Collector gateway and your ServiceNow instance.
{#install-acc-on-np-vdi-golden-image__ul_prereq_install_acc}

Role required: sn-dex-admin

## Procedure

1. From your ServiceNow instance, navigate to Agent Client CollectorAgent Download and copy the mid-less installation command.
2. Download the Agent Client Collector MSI installer to the reference device.
3. Append `LOCALUSERNAME="SYSTEM"` to the MID-less installation command.  
   The `LOCALUSERNAME="SYSTEM"` parameter configures the agent to run as the local `SYSTEM` account, which is required for non-persistent VDI monitoring.

   For the full MID-less installation command syntax, parameters, and an example, see [Non-persistent VDI parameters, scripts, and settings](https://servicenow-prod.fluidtopics.net/4uYTEf3iPso~kWA1vK2LWw "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.").
4. Run the command on the reference device to install Agent Client Collector.
5. Stop the Agent Client Collector service from Services.  
   Open Services as an administrator before stopping the service.
6. Update the acc.yml file at C:\\ProgramData\\ServiceNow\\agent-client-collector\\ to set the agent to non-persistent mode.  

       persistence_type: non_persistent

7. Start the Agent Client Collector service from Services.
8. Wait for host data collection to complete and for policies to synchronize to the agent.
9. Verify that assets are synced by checking the contents of the cache folder at C:\\ProgramData\\ServiceNow\\agent-client-collector\\cache\\.
{#install-acc-on-np-vdi-golden-image__steps_pxy_353_3jc}

## What to do next

Install the DEX browser extension on the reference device. See [Enable DEX browser extension](https://servicenow-prod.fluidtopics.net/gInyzpRs4jIn~~IxAoU_ew "Activate the DEX Chrome or Edge Extension on your system to collect different operational or performance-based metrics for the web applications.").

Prepare the reference device for copying. See [Prepare non-persistent VDI reference device](https://servicenow-prod.fluidtopics.net/DZPhr4E2~9Xk9rbcBq3dzQ "Remove the registration certificate, agent identifier, cached databases, and logs from the reference device before sealing it as a golden image. This cleanup confirms that each VDI duplicated from the image registers with a unique identity on first start.").

*[\>]: and then