After the November 2026 cumulative update (KB5132061), App Volumes users get "Connection Error – Unable to contact App Volumes Manager. Virtualization is disabled." The cause is Microsoft's new NTLM signing behaviour (KB5135557). Here is where the error shows up in the logs, what I ruled out, the workarounds and the fix.
Author: bjosoren
Omnissa Horizon – Wrapping Up the Golden-Image Automation Platform
A wrap-up of the Omnissa Horizon golden-image automation platform — the shared Packer + Ansible pipeline behind the Windows 11, Windows Server 2025 RDSH, and Ubuntu 24.04 builds, the real bugs that shaped it, and what’s coming next.
New guides: Ubuntu File Server, NFS Home Directories, and Horizon Instant Clone Template
Omnissa Horizon and Ubuntu Linux, how to make it run together.
VMware Horizon, App Volumes and DEM – Easter Upgrade
Horizon, App Volumes, Dynamic Environment Manager 2303 Easter Upgrade
VMware Dynamic Environment Manager – Files and Folders feature
How to use the VMware Dynamic Environment Manager Files and Folders feature
VMware Horizon Cloud Pod Architecture set up
How to setup VMware Horizon Cloud Pod Architecture
VMware Horizon True SSO Lab set up.
As part of a larger project at a customer of mine, I was asked to set up VMware Horizon True SSO. This is to be used in conjunction with their VMware Workspace One Access set up. I have never set…
VMware Horizon – CentOS Linux 8 Instant-clone Desktop-pool
How to set up a VMware Horizon Instant-clone Desktop-pool with CentOS 8.1 desktops.
VMware App Volumes 4.0 – Testing logon time
VMware App Volumes 4.0 was finally released on 14 January 2020. Previously I have been running App Volumes on 2.xx and greatly anticipated this release with the new approach towards Applications instead of Appstacks. How would this perform when it…
VMware Horizon – Windows 10 based Application Pools
With VMware Horizon v. 7.9, we now have the ability to set up Application Pools based on Windows 10 Desktop Pools. Could this also be used to publish attached AppStacks from Windows 10 desktops to Application Pools? Did a test…
Read More VMware Horizon – Windows 10 based Application Pools