Troubleshooting

Proxmox QEMU Guest Agent Not Running: Linux & Windows Fix

If Proxmox says QEMU guest agent is not running, reinstalling the agent is often not the fix. First check that the agent is enabled in Proxmox, confirm the service is running inside the VM, and verify the virtio-serial channel. If the option was enabled while the VM was running and the channel is absent, a full stop and start from Proxmox is a sensible next step; reinstalling the guest package cannot create a missing host-side virtual device. ...

Proxmox Wake-on-LAN Not Working: Fix Host and VM

Wake-on-LAN failing on Proxmox? There are two completely separate problems people mean by this: Waking the physical Proxmox host from a full shutdown — this is regular hardware WoL. It works, with a few Proxmox-specific gotchas. Waking a VM that is powered off — classic magic-packet WoL does not work here. A virtual NIC is not a physical card sitting in a low-power state. If you mixed solutions from both threads and nothing worked, that is why. Do them separately. ...

Intel I225-V NIC Reset Loop on Proxmox VE 9: What We Know So Far

If an Intel I225-V interface on Proxmox VE 9 starts falling into a repeating NETDEV WATCHDOG / Reset adapter loop after moving to a 7.0.x Proxmox kernel, there is now at least one well-documented report showing exactly that pattern. The important caveat is scope: this is not yet a broadly confirmed Proxmox-wide bug affecting every I225-V or I226-V system. The strongest current evidence comes from one detailed Proxmox VE 9.2.5 report where the same I225-V hardware was stable on 6.17.13-21-pve and repeatedly failed on two tested 7.0 kernels. ...

Proxmox No Valid Subscription: Repository Fix (PVE 8 & 9)

A Proxmox VE node without a paid subscription can show a subscription notice in the web UI. If the enterprise repository is enabled without a valid key, apt update can also return an authorization error. These are related to subscription status, but they are not the same problem. The web notice is informational. An enterprise-repository error prevents that repository from supplying updates and should be corrected. The supported choices are to buy a subscription and use the enterprise repository, or configure the public no-subscription repository for a non-production lab. ...