---
title: "HostNotInClusterEvent"
description: "The host is not a cluster member. The host is not a member of the cluster. Review the exact description to establish the cause of the event. If this host in intentionally not a cluster member, then this alert can be ignored."
canonical: "https://helpcenter.veeam.com/docs/mp/kb/hostnotinclusterevent.html"
breadcrumb: "Veeam MP for VMware Online Knowledge Base > Event-Based Rules > vSphere Cluster Error > HostNotInClusterEvent"
dateModified: "2026-09-10"
---

# HostNotInClusterEvent

## Summary

The host is not a cluster member.

## Causes

The host is not a member of the cluster. Review the exact description to establish the cause of the event.

## Resolutions

If this host in intentionally not a cluster member, then this alert can be ignored. If the host should be a cluster member, use the vSphere Client to add the host to a cluster, or create a new cluster.

## External

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