GUI not functioning on a new install.


New Member
Feb 8, 2020
Installed Proxmox on a second host and am getting an error (shown below) when trying to edit anything on a VM using the web interface.
Result verification failed (400)

boot: value does not match the regex pattern

Here is my output of pveversion -v

proxmox-ve: 6.0-2 (running kernel: 5.0.15-1-pve)
pve-manager: 6.0-4 (running version: 6.0-4/2a719255)
pve-kernel-5.0: 6.0-5
pve-kernel-helper: 6.0-5
pve-kernel-5.0.15-1-pve: 5.0.15-1
ceph-fuse: 12.2.11+dfsg1-2.1+b1
corosync: 3.0.2-pve2
criu: 3.11-3
glusterfs-client: 5.5-3
ksm-control-daemon: 1.3-1
libjs-extjs: 6.0.1-10
libknet1: 1.10-pve1
libpve-access-control: 6.0-2
libpve-apiclient-perl: 3.0-2
libpve-common-perl: 6.0-2
libpve-guest-common-perl: 3.0-1
libpve-http-server-perl: 3.0-2
libpve-storage-perl: 6.0-5
libqb0: 1.0.5-1
lvm2: 2.03.02-pve3
lxc-pve: 3.1.0-61
lxcfs: 3.0.3-pve60
novnc-pve: 1.0.0-60
proxmox-mini-journalreader: 1.1-1
proxmox-widget-toolkit: 2.0-5
pve-cluster: 6.0-4
pve-container: 3.0-3
pve-docs: 6.0-4
pve-edk2-firmware: 2.20190614-1
pve-firewall: 4.0-5
pve-firmware: 3.0-2
pve-ha-manager: 3.0-2
pve-i18n: 2.0-2
pve-qemu-kvm: 4.0.0-3
pve-xtermjs: 3.13.2-1
qemu-server: 6.0-5
smartmontools: 7.0-pve2
spiceterm: 3.1-1
vncterm: 1.6-1
zfsutils-linux: 0.8.1-pve1

Here is my output of `apt update`
Hit:1 buster/updates InRelease
Hit:2 buster InRelease
Hit:3 buster-updates InRelease
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.

Here is my output of `100.conf`
boot: order=ide0;ide2;net0
cores: 1
ide0: local:100/vm-100-disk-0.raw,size=20G
ide2: none,media=cdrom
memory: 1024
name: Unifi
net0: virtio=9A:87:AB:C9:E1:25,bridge=vmbr0,firewall=1
numa: 0
onboot: 1
ostype: l26
scsihw: virtio-scsi-pci
smbios1: uuid=35720aa1-ddfa-4afc-a35a-5fd0995f77d1
sockets: 1
vmgenid: 5f03a2c8-8324-41cf-9081-e0dd8bd36591


Proxmox Staff Member
Staff member
Jul 28, 2015
South Tyrol/Italy
proxmox-ve: 6.0-2 (running kernel: 5.0.15-1-pve)
pve-manager: 6.0-4 (running version: 6.0-4/2a719255)

This is severely outdated, the latest supported versions are:
  • oldstable: pve-manager/6.4-13/9f411e79 (running kernel: 5.4.140-1-pve)
  • stable: pve-manager/7.0-11/63d82f4e (running kernel: 5.11.22-4-pve)
Here is my output of `apt update`
You're missing a Proxmox VE repository, check the docs and add one that you have access too (enterprise for production setups with support subscription, else the public accessible pve-no-subscription one)

Here is my output of `100.conf`
It seems almost as you restored a backup or migrated a machine made from a newer (6.1+) Proxmox VE version to an older one, that cannot really work; we can only guarantee forward compatibility.
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