--- title: Cerulean Agent Repair Guide description: Cerulean Agent Repair Guide --- [Skip to content](https://help.agileblue.com/cerulean-agent-repair-guide#main-content) English Show submenu for translations [Contact AgileBlue Support](https://help.agileblue.com/kb-tickets/new?hsLang=en) [Customer portal](https://help.agileblue.com/support-ticket-status?hsLang=en) ![FullColor-800px-Aug-04-2025-07-56-16-5066-PM.png\]](https://help.agileblue.com/hs-fs/hubfs/FullColor-800px-Aug-04-2025-07-56-16-5066-PM.png?height=32&name=FullColor-800px-Aug-04-2025-07-56-16-5066-PM.png) Open main navigation Close main navigation - English Show submenu for translations - [Contact AgileBlue Support](https://help.agileblue.com/kb-tickets/new) - [Customer portal](https://help.agileblue.com/support-ticket-status) - AgileBlue Portal AgileBlue Portal Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [Help Center](https://help.agileblue.com/?hsLang=en) 2. [Agent Installation](https://help.agileblue.com/agent-installation?hsLang=en) 3. [Agent Management](https://help.agileblue.com/agent-installation?hsLang=en#agent-management) # Cerulean Agent Repair Guide ## Step-by-step instructions for resolving Cerulean Agent, Elastic Agent, and Elastic Endpoint service issues. ### When to Use This Guide Use this guide if any of the following conditions apply to your device: - You are experiencing issues with Elastic Agent or Elastic Endpoint services. - A device has not checked in within the last 15 minutes and is confirmed to be online. ### Repair Steps 1. Download the Cerulean Agent Installer. 1. Log in to the AgileBlue Portal and navigate to Management → Agent. 2. Download the installer that matches your operating system and installation method. **Important**: Overwrite any existing installer and ensure the file is named windows\_installer3.exe (Windows only) ![](https://help.agileblue.com/hs-fs/hubfs/image-png-3.png?width=612&height=158&name=image-png-3.png) 2. Locate your API Key 1. In the AgileBlue Portal, go to Management → Settings. 2. Select Alert Playbook. 3. Copy your API key listed under the Alert Communication Protocol section. ![](https://help.agileblue.com/hs-fs/hubfs/image-png-Apr-22-2026-06-57-42-1598-PM.png?width=558&height=249&name=image-png-Apr-22-2026-06-57-42-1598-PM.png) 3. Run the Repair Command. 1. Open a terminal (or PowerShell on Windows) and run the command that matches your operating system. Replace YOURAPIKEYHERE with the API key obtained in Step 2.   #### Windows - Command Prompt ``` windows_installer3.exe repair -a YOURAPIKEYHERE -u https://agentapi.agileblue.com ```   - Powershell ``` ./windows_installer3.exe repair -a YOURAPIKEYHERE -u https://agentapi.agileblue.com ```   - Command Prompt - with Syslog ``` windows_installer3.exe repair -a YOURAPIKEYHERE -u https://agentapi.agileblue.com -s ```   - Powershell - with Syslog ``` ./windows_installer3.exe repair -a YOURAPIKEYHERE -u https://agentapi.agileblue.com -s ```   #### Linux - Standard ``` sudo ./linux_installer3 repair -a YOURAPIKEYHERE -u https://agentapi.agileblue.com ```   - Syslog ``` sudo ./linux_installer3 repair -a YOURAPIKEYHERE -u https://agentapi.agileblue.com -s ```   #### Mac - Standard (Intel) ``` sudo ./mac_installer3 repair -a YOURAPIKEYHERE -u https://agentapi.agileblue.com ```   - Intel - with Syslog ``` sudo ./mac_installer3 repair -a YOURAPIKEYHERE -u https://agentapi.agileblue.com -s ```   - Apple Silicon (ARM) ``` sudo ./mac_arm_installer3 repair -a YOURAPIKEYHERE -u https://agentapi.agileblue.com ```   - Apple Silicon - with Syslog - ``` sudo ./mac_arm_installer3 repair -a YOURAPIKEYHERE -u https://agentapi.agileblue.com -s ``` 4. Verify the Repair 1. After the repair completes, confirm the device is checking in again by navigating to Analytics → Data Sources in the AgileBlue Portal. The device should appear with a recent check-in timestamp. **NOTE**: If the device does not appear within 5–10 minutes after running the repair, please contact AgileBlue Support for further assistance.   *Questions? 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