Nightfall Windows Agent: Error: "Configuration error" in Agent Popup
Last updated: March 17, 2026
Issue
Receiving a configuration error from the agent pop-up on a Windows machine.
Agent error shows:
Configuration Error
Environment
Nightfall Windows Agent: All Versions
Cause
Administrator access was not used when deploying the MSI.
Resolution
Before deploying the MSI via Command Prompt, right-click CMD and select "Run as Administrator".
An elevated Command Prompt is required when running the MSI due to the permissions required when deploying the agent and extension.