---
title: "NotEnoughResourcesToStartVmEvent"
description: "Not enough resources to failover a VM. vSphere HA does not have sufficient resources to complete VM failover in a VMware vSphere Cluster."
canonical: "https://helpcenter.veeam.com/docs/mp/kb/notenoughresourcestostartvmevent.html"
breadcrumb: "Veeam MP for VMware Online Knowledge Base > vCenter Server Alarms > Veeam VMware: vSphere HA failover failed Alarm > NotEnoughResourcesToStartVmEvent"
dateModified: "2026-09-10"
---

# NotEnoughResourcesToStartVmEvent

## Summary

Not enough resources to failover a VM.

## Causes

vSphere HA does not have sufficient resources to complete VM failover in a VMware vSphere Cluster. The problem can have the following causes:

- Hosts in the cluster are disconnected, not responding or are placed to the maintenance mode.
- Hosts have a vSphere HA error.
- Some of VMs in the cluster have much more memory and CPU resources reserved than other VMs.
- There are no free slots in the cluster.

## Resolution

- Check hosts connectivity and state.
- Re-configure VMs to balance resource reservation.
- Make sure that there are free slots in the cluster.

## External

Refer to this [VMware KB article](https://knowledge.broadcom.com/external/article/389685/virtual-machines-fail-to-start-with-the.html) for more information on VM failover problems.