How to easily update your VMware vCenter Server Appliance from VCSA 6.5 to 6.5.0a

Posted by Paul Braren on Feb 7 2017 (updated on Mar 31 2018) in
  • ESXi
  • Virtualization
  • HowTo
  • HomeLab
  • Important Update - On Mar 20 2018, VMware VMSA-2018-0004.3 announced that CVE-2017-5715 (Spectre-2) mitigation is now included in the latest patch that you should be using instead of the older patch featured in the original article below. You'll find the newer article here:

    Article below as it originally appeared.

    VMware Release Notes for vCenter Server Appliance 6.5.0a | 02 FEB 2017 | Build 4944578

    vCenter/VCSA 6.5 should be upgraded to 6.5.0a before upgrading your host(s) to ESXi 6.5.0a!

    Once in a while, things are easy. One of the selling points of making the big move from vCenter+Windows to VCSA has been the ease of VCSA upgrades through the handy VAMI web UI. Yep, works as advertised! This is a very easy upgrade, as shown screen-by-screen below.


    • VCSA 6.5 with internet access

    If your VCSA has no internet access, follow the offline install procedure at:


    Here's my bubble caption at the beginning of the short and simple walk-thru video below:

    Do this VCSA 6.5.0a upgrade in a test environment first! Before attempting, you should be sure to have a full backup, such as the simple native VCSA backup button seen at top-right. You can also use a 3rd party backup solution. At a minimum, you can do a snapshot of this VCSA VM before upgrading, make sure everything works alright, then remove the snapshot, ideally within a day or so, to avoid performance degradation


    If you're looking for how you get from 6.0.x to 6.5, that's more of a migration, and the right article for you is over here:

    If you're looking for how you get from ESXi 6.5.x to 6.5.0a, that article is over here:


    Simple Upgrade from VCSA 6.5 to 6.5.0a using VAMI

    in your browser, go to your VCSA IP or Name:5480
    login with root and your password
    along the left edge of DCUI, click 'Update'
    At right-, click 'Install Updates', 'Install All Updates'
    wait for a bit, on SSDs, a bit is less than 2 minutes
    wow, you're done already
    DCUI shows you confirmation, you're at


    How to easily update your VMware vCenter Server Appliance from VCSA 6.5 to 6.5.0a

    See also at TinkerTry