---
title: "HostCnxFailedCcagentUpgradeEvent"
description: "Connection failed for host: failed to install/upgrade vCenter Agent service. There is a conflict with an upgrade or installation of the host agent. For information on resolution steps, review this VMware KB article."
canonical: "https://helpcenter.veeam.com/docs/mp/kb/hostcnxfailedccagentupgradeevent.html"
breadcrumb: "Veeam MP for VMware Online Knowledge Base > Event Monitors > Host Connection Status > HostCnxFailedCcagentUpgradeEvent"
dateModified: "2026-09-10"
---

# HostCnxFailedCcagentUpgradeEvent

## Summary

Connection failed for host: failed to install/upgrade vCenter Agent service.

## Causes

There is a conflict with an upgrade or installation of the host agent.

## Resolutions

For information on resolution steps, review this [VMware KB article](https://kb.vmware.com/s/article/1003870).

## External

Refer to the [VMware Online Documentation](https://techdocs.broadcom.com/) for more information.