How can I change Home Assistant Instance ID?

[Mastiff]

I copied my instance on one Pi to a virtual machine and got this:

Homeassistant | 2025-11-13 12:37:59.937 WARNING (MainThread) [homeassistant.components.zeroconf.discovery] Discovered another Home Assistant instance with the same instance ID (probably very secret ID) at probably very secret MAC, 192.168.10.103

How can I change the instance ID of the second instance to avoid this? The reason I copy is that I am migrating much of the setup from the Pi to the VM (virtual Debian running on a quite powerful home server). I will need to use Remote Home Assistant on a few things that the Pi has access to, but not the VM, so they will be co-existing at least for the forseable future.

[HappyCadaver (Rick Furtado)]

I got this during the last beta since I use my last backup to ‘restore’ a beta instance. There should be an ‘repiar’ issue raised in the front end, if you bring that up there’s a ‘Submit’ button at the bottom that will change that instances id. Mine looked like this…

[Mastiff]

Thank you! It didn’t appear at first, but after restarting both the new and the old instance it finally came, and it is apparently fixed now.