---
title: "VmDiskFailedEvent"
description: "This event records a failure to create a virtual disk in a virtual machine. Cannot create virtual disk. When you add a hard disk to a virtual machine, you can create a new virtual disk, add an existing virtual disk, or add a mapped SAN LUN."
canonical: "https://helpcenter.veeam.com/docs/mp/kb/vmdiskfailedevent.html"
breadcrumb: "Veeam MP for VMware Online Knowledge Base > Event-Based Rules > Virtual Machine Error > VmDiskFailedEvent"
dateModified: "2026-09-10"
---

# VmDiskFailedEvent

## Summary

This event records a failure to create a virtual disk in a virtual machine.

## Causes

Cannot create virtual disk.

When you add a hard disk to a virtual machine, you can create a new virtual disk, add an existing virtual disk, or add a mapped SAN LUN.

## Resolutions

- Check user permissions on file system where virtual disk should be created.
- Check VMFS block size format.

## External

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