Search the VMware Knowledge Base (KB)
View by Article ID

VMware ESXi 4.0, Patch Release ESXi400-201206001 (2021027)

  • 2 Ratings


Release Date: June 14, 2012

Download Filename
Download Size
62.9 MB


Host Reboot Required: Yes

Virtual Machine Migration or Shutdown Required: Yes

Bulletin ID Classification Knowledge Base Article
KB 2021024


Summaries and Symptoms

This patch contains security fixes for ESXi 4.0. For more information, see the KB for the individual bulletin.

Best Practices for a Secure Environment

To ensure that you have the complete set of security fixes, VMware recommends that you first update to ESXi 4.0 Update 4 and install all subsequent patches, including this one.

For instructions and system requirements, see the Upgrade Guide. Also read the ESXi 4.0 Update 4 Release Notes for important information on the tools you use to upgrade ESXi 3.0 to Update 4 and other tips.

Note: This upgrade will require rebooting the host and migration or shutdown of virtual machines.

Patch Download and Installation

ESXi hosts can be updated by downloading the patch zip file from and using the vihostupdate command through the vSphere CLI. For details, see the vSphere CLI Installation and Reference Guide and the vSphere Upgrade Guide.

Request a Product Feature

To request a new product feature or to provide feedback on a VMware product, please visit the Request a Product Feature page.


  • 2 Ratings

Did this article help you?
This article resolved my issue.
This article did not resolve my issue.
This article helped but additional information was required to resolve my issue.

What can we do to improve this information? (4000 or fewer characters)

Please enter the Captcha code before clicking Submit.
  • 2 Ratings