Windows VM go unexpectedly offline sometimes

[Fra]

In two identical proxmox setup (pve-manager/7.2-3) we have several VM "Windows 10 Pro N" (so 64bit).

The VM worked fine for months: now some random VM unexpectedly goes offline sometimes: it happens almost all the time at night, in both proxmox hosts


The VM are all cloned from an original one (so all with different NIC), and all have their dedicate individual unique license.

Can you give me some suggestion on where to start to debug?

thanks

p.s.
* VM are installed according to best practices (Proxmox wiki)
* no backup are in place for all these VM
* the host has no issue with lack of memory, high CPU load, or disk space
* the VM 'machine' are all: Default (i440fx), version 6.1
* VM storage is: local-lvm, with raw format

 

[fiona]

Hi,
is there any error message in /var/log/syslog when the VM crashes?

If there error is KVM: entry failed, hardware error 0x80000021, please see this thread. Unfortunately, there's no solution yet, but suggested work arounds which helped for some users.

If it's something else, please post the error here, together with the output of pveversion -v and qm config <ID>.