Problems accessing the web GUI

[willichen]

Hello!
I have problems accessing the web GUI on my Proxmox from the browser that runs on the same network. I can ping them and connect them using ssh from the client.
This problem started after updating from v5.2-1 to v5.4-1

The browser (Firefox) gives me this message when I try to find the URL: https://10.0.0.254:8006/

Failed Secure Connection

The connection to 10.0.0.254:8006 was interrupted while the page was loading.

The page you are trying to view can not be displayed because the authenticity of the received data could not be verified.
Please contact the website owners to inform them of this problem.

root@pve02:/# pveversion -v
proxmox-ve: 5.4-1 (running kernel: 4.15.17-1-pve)
pve-manager: 5.2-1 (running version: 5.2-1/0fcd7879)
pve-kernel-4.15: 5.2-1
pve-kernel-4.15.17-1-pve: 4.15.17-9
corosync: 2.4.4-pve1
criu: 2.11.1-1~bpo90
glusterfs-client: 3.8.8-1
ksm-control-daemon: 1.2-2
libjs-extjs: 6.0.1-2
libpve-access-control: 5.0-8
libpve-apiclient-perl: 2.0-5
libpve-common-perl: 5.0-31
libpve-guest-common-perl: 2.0-16
libpve-http-server-perl: 2.0-13
libpve-storage-perl: 5.0-23
libqb0: 1.0.3-1~bpo9
lvm2: 2.02.168-pve6
lxc-pve: 3.1.0-3
lxcfs: 3.0.3-pve1
novnc-pve: 1.0.0-3
proxmox-widget-toolkit: 1.0-25
pve-cluster: 5.0-36
pve-container: 2.0-23
pve-docs: 5.4-2
pve-firewall: 3.0-19
pve-firmware: 2.0-6
pve-ha-manager: 2.0-9
pve-i18n: 1.1-4
pve-libspice-server1: 0.12.8-3
pve-qemu-kvm: 2.11.1-5
pve-xtermjs: 3.12.0-1
qemu-server: 5.0-26
smartmontools: 6.5+svn4324-1
spiceterm: 3.0-5
vncterm: 1.5-3
zfsutils-linux: 0.7.13-pve1~bpo2

 

[tim]

This is probably a issue with your ssl certificate and maybe some 3rd party addon or software, try to access from another browser or in a incognito window.

 

[willichen]

I do not use anything from third parties. I've already tried Firefox, Chrome and Edge. The problem persists

 

[tim]

Do you run any antivirus software on your client like kaspersky or similar? Did you try it from another client? Do you use the default certificates generated by pve or did you setup your own ones?

 

[SierraEcho]

Hello!

root@pve02:/# pveversion -v
proxmox-ve: 5.4-1 (running kernel: 4.15.17-1-pve)
pve-manager: 5.2-1 (running version: 5.2-1/0fcd7879)

It seems that the pve-manager package has not been updated on your system for some reason, it should be on 5.4.x as well.

Try doing

apt update

and then

apt dist-upgrade

from your shell and then see if there are any errors, if not, check the pveversion again to see if the pve-manager has been updated and try logging in again.