UCS Download

Univention Corporate Server (UCS) is available as an ISO image for installation or as a preinstalled, virtual machine image for VMware and Virtualbox. With these images, you can instantly use UCS for free as a UCS Core Edition.

After accepting the licensing conditions, you can download UCS.

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Download UCS 4.3 ISO Image

Install UCS directly to your hardware by burning the ISO image onto a CD or saving it on a USB stick. To run UCS in a virtualization environment, just integrate the ISO image into it.

The image includes a license key of the UCS Core Edition and can be used instantly after the confirmation of the licensing conditions.

Download UCS 4.3 VM Images

You can run and use UCS directly as a preinstalled VMware image or a VirtualBox image. The images contain a license key of the UCS Core Edition and can be used immediately after having confirmed the licensing conditions.


Besides the Core Edition of UCS you also have the possibility to purchase a UCS Enterprise Subscription incl. support. More information can be found at Prices and Subscriptions.

Previous UCS version

Some apps from the App Center are not available for UCS 4.3 yet.
To use these apps with UCS, you can download the previous version, UCS 4.2.

To the download area of UCS 4.2

UCS as EC2 image

You can also operate UCS as a free Core Edition via an EC2 image at Amazon Web Services. You only need an AWS account and the EC2 image of your region.

To UCS EC2 images