Proxmox Remove You Do Not Have a Valid Subscription Error

Edit file : /etc/apt/sources.list.d/pve-enterprise.list

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

Change :

deb https://enterprise.proxmox.com/debian/pve bookworm pve-enterprise

To:

# Proxmox VE pve-no-subscription repository provided by proxmox.com,
# NOT recommended for production use
deb http://download.proxmox.com/debian/pve bookworm pve-no-subscription
# security updates
deb http://security.debian.org/debian-security bookworm-security main contrib

Edit file /etc/apt/sources.list.d/ceph.list

nano /etc/apt/sources.list.d/ceph.list

Change:

deb https://enterprise.proxmox.com/debian/ceph-quincy bookworm enterprise

To:

deb http://download.proxmox.com/debian/ceph-quincy bookworm no-subscription

Run these commands:

apt update

apt upgrade -y

Bibliogrtaphy

https://pve.proxmox.com/wiki/Package_Repositories
https://www.virtualizationhowto.com/2022/08/proxmox-update-no-subscription-repository-configuration/