Determining Build Number and Version for ESXi via vSphere Web Client

To determine the version and update your ESXi hosts are running, use the following method. It is assumed that vCenter is running in your environment.

 

First of all we need to get build number:

Log in to the vCenter using the web client
Click Hosts and Clusters -> {your vCenter} -> {your Datacenter} -> {your cluster} -> {specific host}.
Under Summary -> Configuration you'll see the ESX/ESXi version. 

 

buildnumber1

 

When we have obtained the build number we need to cross-reference this using VMware KB2143832

A snippet is taken below:

Version

Release Date

Build Number

Installer Build Number

ESXi 6.5.0d 2017-04-18 5310538 NA
ESXi 6.5. Express Patch 1a 2017-03-28 5224529 NA
ESXi 6.5. Patch 01 2017-03-09 5146846 5146843
ESXi 6.5.0a 2017-02-02 4887370 N/A
ESXi 6.5 GA 2016-11-15 4564106 N/A
ESXi 6.0 Patch 5 2017-06-06 5572656 N/A
ESXi 6.0 Express Patch 7c 2017-03-28 5251623 N/A
ESXi 6.0 Express Patch 7a 2017-03-28 5224934 N/A
ESXi 6.0 Update 3 2017-02-24 5050593 N/A
ESXi 6.0 Patch 4 2016-11-22 4600944 N/A
ESXi 6.0 Express Patch 7 2016-10-17 4510822 N/A
ESXi 6.0 Patch 3  2016-08-04 4192238 N/A
ESXi 6.0 Express Patch 6 2016-05-12 3825889 N/A
ESXi 6.0 Update 2 2016-03-16 3620759 N/A
ESXi 6.0 Express Patch 5 2016-02-23 3568940 N/A
ESXi 6.0 Update 1b 2016-01-07 3380124 N/A
ESXi 6.0 Express Patch 4 2015-11-25 3247720 N/A
ESXi 6.0 U1a (Express Patch 3) 2015-10-06 3073146 N/A
ESXi 6.0 U1 2015-09-10 3029758 N/A
ESXi 6.0.0b 2015-07-07 2809209 N/A
ESXi 6.0 Express Patch 2 2015-05-14 2715440 N/A
ESXi 6.0 Express Patch 1 2015-04-09 2615704 2615979
ESXi 6.0 GA 2015-03-12 2494585 N/A

 

As you see highlighted above we can see that this particular host is running ESXi 6.0 update 2