---
title: "com.vmware.vc.HA.HostHasNoIsolationAddrsDefined"
description: "Host has no isolation addresses defined as required by vSphere HA. There is an issue with vSphere High Availability protection for this cluster. Review the event description for detail on the cause."
canonical: "https://helpcenter.veeam.com/docs/mp/kb/com.vmware.vc.ha.hosthasnoisolationaddrsdefined.html"
breadcrumb: "Veeam MP for VMware Online Knowledge Base > Event-Based Rules > vSphere Cluster Warning > com.vmware.vc.HA.HostHasNoIsolationAddrsDefined"
dateModified: "2026-09-10"
---

# com.vmware.vc.HA.HostHasNoIsolationAddrsDefined

## Summary

Host has no isolation addresses defined as required by vSphere HA.

## Causes

There is an issue with vSphere High Availability protection for this cluster. Review the event description for detail on the cause.

## Resolutions

See VMware online documents such as [Troubleshooting VMware High Availability](https://knowledge.broadcom.com/external/article/318936/troubleshooting-vmware-high-availability.html) and the [vSphere Troubleshooting Guide](https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.networking.doc/GUID-DE119813-63A7-4B68-924D-1ED95F6EFFD7.html) to resolve HA issues.

## External

Refer to the online [vSphere Availability Guide](https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.avail.doc/GUID-63F459B7-8884-4818-8872-C9753B2E0215.html) for further guidance.