---
title: "HostWwnConflictEvent"
description: "The WWN ({wwn}) of {host.name} conflicts with the currently registered WWN. There is a conflict of host WWNs (World Wide Name) with registered WWNs. Check for storage configuration issues."
canonical: "https://helpcenter.veeam.com/docs/mp/kb/hostwwnconflictevent.html"
breadcrumb: "Veeam MP for VMware Online Knowledge Base > Event-Based Rules > vSphere Host Storage Error > HostWwnConflictEvent"
dateModified: "2026-09-10"
---

# HostWwnConflictEvent

## Summary

The WWN ({wwn}) of {host.name} conflicts with the currently registered WWN.

## Causes

There is a conflict of host WWNs (World Wide Name) with registered WWNs.

## Resolutions

Check for storage configuration issues. 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.