Proxmox Backup Server No Subscription Update Repository

Proxmox Backup Server offers subscriptions for productive systems with which you can still get support from Proxmox for tested updates. For certain test systems, you may not want to purchase a subscription. The company, Thomas-Krenn.AG, recommends using Proxmox Proxmox Backup Server Support Subscriptions for productive systems. Proxmox Backup Server subscriptions are the only way to fund and support the ongoing development of Proxmox VE and Proxmox PBS. If you still want to use a no-subscription repository, the following error appears after default-installation if you want to start a PBS upgrade via

apt update && apt dist-upgrade

E: Failed to fetch https://enterprise.proxmox.com/debian/pbs/dists/buster/InRelease  401  Unauthorized [IP: 212.224.xxx.xxx 443]
E: The repository 'https://enterprise.proxmox.com/debian/pbs buster InRelease' is not signed.

To switch to the pbs-no-subscription repository, you need to edit the repository file:

nano /etc/apt/sources.list.d/pbs-enterprise.list

and copy the following content into the file or make the following changes. Here, the enterprise repository was commented out and the no-subscription repository was added (Note that, unlike the enterprise repository, the no-subscription repository does not use https)

# deb https://enterprise.proxmox.com/debian/pbs buster pbs-enterprise
deb http://download.proxmox.com/debian/pbs buster pbs-no-subscription

After completing these steps, the update process also functions without subscription.

Author: Jonas Sterr Jonas Sterr has been working for Thomas-Krenn for several years. Originally employed as a trainee in technical support and then in hosting (formerly Filoo), Mr. Sterr now mainly deals with the topics of storage (SDS / Huawei / Netapp), virtualization (VMware, Proxmox, HyperV) and network (switches, firewalls) in product management at Thomas-Krenn.AG in Freyung.

Translator: Alina Ranzinger Alina has been working at Thomas-Krenn.AG since 2024. After her training as multilingual business assistant, she got her job as assistant of the Product Management and is responsible for the translation of texts and for the organisation of the department.