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Omnissa Horizon

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Omnissa Horizon 2412 – Rebranding!

On January 28th, 2025, Omnissa released Horizon 2412. New 2412 versions were already released in the past for App Volumes, ThinApp, Dynamic Environment Manager, and Workspace One Access, but now they also released the latest version for Horizon. Please carefully plan this upgrade before you start upgrading your existing environment. Some significant rebranding changes could seriously impact your existing environment. The first thing to note is that this version is… Read More »Omnissa Horizon 2412 – Rebranding!

Server’s certificate is not trusted

Also known as: “Certificate revocation check failed” A while ago I had an issue with a Horizon customer, where I got an error on the Horizon dashboard saying “The server’s certificate is not trusted”. The error message appeared for all connection servers we had. This was very strange, as we hadn’t changed any certificate-related things and I was pretty sure that the certificate was not expired either. Clicking on the… Read More »Server’s certificate is not trusted

Horizon View Blast Secure Gateway service paused

Also known as: “Problems renewing the Horizon Connection server certificate” When renewing the Certificate used for the Horizon Connection server, it’s important that you use the correct settings. If not, the Horizon Connection server service will be running, but you won’t be able to access the Horizon Admin Console or even be able to logon to Horizon. After renewing the Horizon Connection server certificate you need to restart the Horizon… Read More »Horizon View Blast Secure Gateway service paused

VMware Horizon authentication using AzureAD (with multifactor) – Part 5: TrueSSO Setup

This is part of a series of post for setting up VMware Horizon authentication using AzureAD. TrueSSO setup We are almost there! So far we have created our sub-CAs, setup certificate templates, installed the enrollment server and configured the SAML authentication. At this point, Connecting to the UAG will redirect the user to Azure to log in and when successfully authenticated redirect the user back to the UAG which will… Read More »VMware Horizon authentication using AzureAD (with multifactor) – Part 5: TrueSSO Setup

VMware Horizon authentication using AzureAD (with multifactor) – Part 4: SAML Setup

This is part of a series of post for setting up VMware Horizon authentication using AzureAD. SAML setup In the next part, we will set up the SAML authentication. This consists of 3 steps: First, we need to create the SAML application on Azure, then we will configure the UAG to use that SAML application for authentication, and finally, we need to configure Horizon to accept that SAML authentication. Azure… Read More »VMware Horizon authentication using AzureAD (with multifactor) – Part 4: SAML Setup

VMware Horizon authentication using AzureAD (with multifactor) – Part 3: Enrollment Servers

This is part of a series of post for setting up VMware Horizon authentication using AzureAD. Enrollment server(s) Repeat all steps in this part on both enrollment/sub-CA servers! On the enrollment/sub-CA server, open the local machine certificate manager: Right-click the Personal node, choose All Tasks > Request New Certificate Click next on the welcome page. Select “Active Directory Enrollment Policy” and click next Select “Enrollment Agent (computer)” and click Enroll.… Read More »VMware Horizon authentication using AzureAD (with multifactor) – Part 3: Enrollment Servers

VMware Horizon authentication using AzureAD (with multifactor) – Part 2: Certification Template

This is part of a series of post for setting up VMware Horizon authentication using AzureAD. Certification Template The way TrueSSO works is it is using a certificate issued for the user after a successful SAML authentication and authenticates against AD using a smartcard type logon with that certificate. Those certificates are short-lived certificates, valid for approximately 8 or 12 hours (depending on the user’s average working time). Therefore we… Read More »VMware Horizon authentication using AzureAD (with multifactor) – Part 2: Certification Template

VMware Horizon authentication using AzureAD (with multifactor) – Part 1: Setup sub-CA(s)

This is part of a series of post for setting up VMware Horizon authentication using AzureAD. Sub-CA(s) First, we are going to set up a subordinate certification authority on our 2 servers. I’m using Windows server 2022, but 2019 or 2016 also works fine. By using a sub-CA, all trueSSO certificate requests are handled by those sub-CAs, reducing the load your the root-CA and we are not dependent on a… Read More »VMware Horizon authentication using AzureAD (with multifactor) – Part 1: Setup sub-CA(s)

VMware Horizon authentication using AzureAD (with multifactor)

Securing external connections to your VMware Horizon environment is not always easy. However, you might already have all the tools necessary to allow external users to access your VMware Horizon environment in a secure way, by which I mean, using multi-factor authentication. If you have: then you are good to go. What we will accomplish is that external users will connect to the Unified Access Gateway. The UAG will use… Read More »VMware Horizon authentication using AzureAD (with multifactor)

Cannot complete customization…

A while ago I was experimenting with Packer to automate the creation and updating of my VMware Horizon master images. More details about this in a next post. During my testing however, I needed to clone a Windows VM and apply a customization to it using sysprep. If I tried that using Packer, I got the error “cannot complete customization”. The same error message appeared in the vCenter. To be… Read More »Cannot complete customization…