Tag Archives: Upgrade - Page 2

Upgrade vCenter 5.1 to 5.5 error: "The existing ssl certificate is invalid"

The upgrade from vCenter Server 5.1 to vCenter Server 5.5 (5.5.0 and 5.5.0a) fails during the SSO installation with the following error message:

The existing ssl certificate is invalid

After verifying the certificate i could confirm that it is valid and not expired. After troubleshooting the update log I figured out that the problem was caused by a wrong registry entry. The old 5.1 installation was using an IP address instead of the vCenters FQDN.

Read more »

Warning 25000 at vCenter 5.5 Update - How to handle?

When you are updating VMware vCenter Server 5.1 to version 5.5 you always get that "Warning 25000" message. This post shows how to check that the certificate is valid, and how to replace a expired certificate

Warning 25000. Please verify that the SSL certificate for your vCenter Single Sign-On 5.1 SSL is not expired. If it did expire, please replace it with a valid certificate before upgrading to vCenter Single Sign-On 5.5.

Read more »

Howto Update vCenter and ESXi Hosts to vSphere 5.5

The recently released major update of VMware vSphere, version 5.5 addresses several issues in vSphere 5.1. An update is absolutely recommended as it resolves many issues and reduces the complexity of some components like Single Sign-On. This update guide shows a small Walk-though how to Update you Platform to vSphere 5.5.


Read more »

VMware ESXi 5.5 - Unsupported Hardware

Double check your vendors support when updating ESXi hosts from VMware vSphere 5.x to 5.5. There are a lot of systems that are no longer supported. The following servers were supported in 5.x but are no longer supported in 5.5:

Read more »

vSphere 5.5 Download – Public Available!

As VMware has announced it at VMworld in San Francisco, the new release of its flagship server virtualization product is now available for everyone. Grab your copy here (You need a My VMware account):

VMware vSphere 5.5 Download

New Product Version:

  • VMware vCenter Server 5.5.0 Build 1312299
  • VMware ESXi 5.5.0 Build 1331820

I have also updated my Release History Database:


Updating ESXi from 5.0 to 5.1 - Unsupported Hardware

Be careful when updating you ESXi hosts from VMware vSphere 5.0 to 5.1. The following servers were supported in 5.0 but are no longer supported in 5.1:

Read more »

vSphere 5.1 - Issues and Limitations you need to know

[Last Update: 8. Jan 2013]

VMware vSphere 5.1 is now global available since about one week. It's time to wrap up the issues and limitations you should know if you are planning to upgrade your environment. I am tracking all of this issues and will report if there are any changes. Please subscribe if you want to get notified. Read more »