# Troubleshooting DEX Component Failures

This document outlines common causes and resolutions for DEX component installation / upgrade failures.

## Common Causes and Resolutions for Agent Installation / Upgrade Failure

1. **Unable to reach Endpoint Central Server / Distribution Server**

   - **Possible cause**: Network connectivity issues may prevent the agent from reaching the server.
   - **Actions**: Refer to this [Knowledge Base (KB) Article](https://www.manageengine.com/products/desktop-central/agent_communication_failure.html) to check and resolve connectivity related issues.

2. **Security Software Blocking Installation Actions**

   - **Possible cause**: Antivirus or other security software may mistakenly flag and remove installation files or block access to critical components (File/Folder, Registry, or Services).
   - **Actions**: Collect and share the following with Endpoint Central Support:
     - Agent logs
     - Details of binary removal or access denial from antivirus logs
     - Error screenshots
     - Steps to Upload Logs: Follow the instructions provided in this [document](https://www.manageengine.com/products/desktop-central/logs-how-to.html)

## Unexpected Crashes of DEX Component Binaries

- **Possible cause**: One or more DEX component binaries could have unexpectedly crashed during runtime.
- **Actions**: Upload the following logs to aid troubleshooting:
  - Agent logs
  - Event Viewer logs (Windows → Application)
  - Steps to Upload Logs: Follow the instructions provided in this [document](https://www.manageengine.com/products/desktop-central/logs-how-to.html)

### Need Help?

If the above steps do not solve your issues, please contact [Endpoint Central support](mailto:endpointcentral-support@manageengine.com) for further assistance.