The purpose of collecting Horizon Agent diagnostic logs is typically to enable VMware Support to analyze issues that administrators are encountering. The process involves the collection of diagnostic log bundles from specific VMs, eventually resulting in VMware Support diagnosing the issues. The term DCT bundle (Data Collection Tool bundle) is often used by VMware Support in reference to this type of log bundle.

Horizon Agent diagnostic log collection can occur in the following ways.

You, as a customer administrator, collect agent logs using the Horizon Universal Console.
Administrators tend to collect agent logs using the Horizon Universal Console after filing a technical support request (SR), and while responding to that SR, the assigned support team determines that diagnostic log bundles from specific VMs are required to diagnose the issue.

For details about how to collect agent logs, see Collect Horizon Agent Logs Using the Horizon Universal Console

For customers who are opted-in to allow VMware Operations access to agent diagnostic logs, the VMware Operations team directly generates agent logs in order to debug VM-related end-user issues.
To resolve issues more quickly, VMware Operations uses Horizon Agent diagnostic logs to debug VM-related end-user issues.
  • You, as a customer administrator, have full control to view and delete logs generated in the Horizon Universal Console.
  • Horizon Agent logs are automatically deleted after 15 days.
  • The URL for downloading the agent logs is live for a limited time, which is specified by the log expiry date.
  • VMware Operations cannot generate, view, or delete your agent logs if you are opted out of this feature. However, for better serviceability remain opted in.

For details about allowing VMware Operations to collect agent logs, see Allow or Disallow VMware Operations to Collect Horizon Agent Logs.

Important:
  • When an agent log is generated, the log is listed on the Agent Logs page, accessible by selecting Monitor > Agent Logs. The "Initiated by" column on the Agent Logs page provides transparency about who generated the agent log, either an administrator within your organization or VMware Operations.
  • When agent logs are generated or deleted, the activity is recorded on the Activity Logs page, where you can review it. See Monitoring Administrator and End User Activity from the Activity Log Page.
  • The diagnostic logs might contain data generated by both third party components, such as Microsoft Windows operating system (such as Windows event logs), and VMware software components, which are required for debugging.

    The diagnostic logs might contain personally identifiable information, such as username, email, etc. VMware cannot obfuscate such data without losing context for diagnostics. VMware uses this data strictly for diagnostic purposes, and no other purpose.