---
title: "VmPrimaryFailoverEvent"
description: "This event records a fault tolerance failover. The reason could be: lost connection to primary, partial hardware failure of primary or by user."
canonical: "https://helpcenter.veeam.com/docs/mp/kb/vmprimaryfailoverevent.html"
breadcrumb: "Veeam MP for VMware Online Knowledge Base > Event-Based Rules > Virtual Machine Error > VmPrimaryFailoverEvent"
dateModified: "2026-09-10"
---

# VmPrimaryFailoverEvent

## Summary

This event records a fault tolerance failover.

## Causes

The reason could be: lost connection to primary, partial hardware failure of primary or by user.

## Resolutions

Check connectivity to the primary VM, any hardware failure or vCenter event log for user-initiated actions.

The failover should mean that the application/workload running inside the VM is still available; however you should establish the reason for the failover.

See the [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 more information.

## External

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