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Proxmox Support Forum

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Repository update error
invalid@exam · 2026-06-28 · via Proxmox Support Forum

Hi. Proxmox 9 cannot be updated from the pve-no-subscription repository by URI: https://download.proxmox.com/debian/pve because there is a certificate error. The certificate was issued for enterprise.proxmox.com

Code:

Hit:1 http://security.debian.org/debian-security trixie-security InRelease
Hit:2 http://deb.debian.org/debian trixie InRelease                                                                             
Hit:3 http://deb.debian.org/debian trixie-updates InRelease                                     
Hit:4 http://download.proxmox.com/debian/ceph-squid trixie InRelease                             
Ign:5 https://download.proxmox.com/debian/pve trixie InRelease             
Ign:5 https://download.proxmox.com/debian/pve trixie InRelease
Ign:5 https://download.proxmox.com/debian/pve trixie InRelease
Err:5 https://download.proxmox.com/debian/pve trixie InRelease
  SSL connection failed: error:0A000086:SSL routines::certificate verify failed / Success [IP: 45.84.67.184 443]
All packages are up to date.     
Warning: Failed to fetch https://download.proxmox.com/debian/pve/dists/trixie/InRelease  SSL connection failed: error:0A000086:SSL routines::certificate verify failed / Success [IP: 45.84.67.184 443]
Warning: Some index files failed to download. They have been ignored, or old ones used instead.

sterzy

Proxmox Staff Member

Staff member

Do you have a proxy in between you and the host? Also could you post the output of the following command openssl s_client -connect '45.84.67.184:443'? Ideally in a [code][/code] block? Thanks!

UdoB

Distinguished Member
Nov 1, 2016
3,776
2,502
273
Germany

Sorry for necroposting, but I have the same issue:
I'd like to compile nvidia drivers, so I'd like to install pve-headers - but when adding "download.proxmox.com" APT source (following the above wiki instructions), I get:

Err:4 https://download.proxmox.com/debian/pve trixie InRelease
SSL connection failed: error:0A000086:SSL routines::certificate verify failed / Success [IP: 45.144.xx.xx 443]
All packages are up to date.
Warning: Failed to fetch https://download.proxmox.com/debian/pve/dists/trixie/InRelease SSL connection failed: error:0A000086:SSL routines::certificate verify failed / Success [IP: 45.144.208.36 443]
Warning: Some index files failed to download. They have been ignored, or old ones used instead.

Indeed, the reason is that download.proxmox.com still returns an SSL-cert for enterprise.proxmox.com:

Just wanted to say the SSL-confusion is still a (confusing-me) issue ;)

Thanks for all your great work!