---
title: "HostWwnChangedEvent"
description: "This event records a change in a host WWN (World Wide Name). WWNs were changed for the host. Review VMware online documents such as vSphere Storage Guide for more information on WWN assignments."
canonical: "https://helpcenter.veeam.com/docs/mp/kb/hostwwnchangedevent.html"
breadcrumb: "Veeam MP for VMware Online Knowledge Base > Event-Based Rules > vSphere Host Storage Warning > HostWwnChangedEvent"
dateModified: "2026-09-10"
---

# HostWwnChangedEvent

## Summary

This event records a change in a host WWN (World Wide Name).

## Causes

WWNs were changed for the host.

## Resolutions

Review VMware online documents such as [vSphere Storage Guide](https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.storage.doc/GUID-8AE88758-20C1-4873-99C7-181EF9ACFA70.html) for more information on WWN assignments.

## External

Refer to the [VMware Online Documentation](https://techdocs.broadcom.com/) for more information on vCenter event messages and possible solutions.