I had Electric Eel 24.10.3 and held out on upgrading to Fangtooth because I have several important VMs. Now that classic virtualization has been restored to Fangtooth, I upgraded to Fangtooth 25.04.2. After upgrading, the VMs are not visible under the virtualization tab, but they are running, as I …

Did you do a whole new upgrade after you fixed the passwords or just boot into the previous failed upgrade attempt? The problem is in the upgrade code. What you have to do is delete the bad boot and do a re-upgrade that way it will build the OS correctly.

Refer to the announcements section on the upgrade and the release notes for updates

[image] HOWTO: Fix Virtual Machines: Cannot Retrieve Response in 25.04.2 Apps and Virtualization The bug in 25.04.2 that causes the Virtual Machines page to error with “Cannot Retrieve Response” has been fixed for a future 25.04.2.1 release already, but the fix can be easi…

Thanks. I didn’t know about this bug. There is no pressing need for me to upgrade, so I’ll stay with Electric Eel until 25.04.2.1 comes out.

Simply go to the VM and make sure the “display” configuration has a password assigned to it for all your VM’s then do the upgrade. Under EEL, go to the virtual machine setting. Go to devices/Display and make sure it has a password assigned. Set them all with a display password and then do the upgrad…

[image] davistw: Simply go to the VM and make sure the “display” configuration has a password assigned to it for all your VM’s then do the upgrade. Under EEL, go to the virtual machine setting. Go to devices/Display and make sure it has a password assigned. Set them all with a display password a…

I have finally gotten this working. The solution was to add passwords to the display device for any VMs that were missing them. But then, since I originally upgraded to 25.04.02 with VMs that lacked display device passwords, I had to delete the failed upgrade to 25.04.02 from “Boot Environments” (wh…

After upgrading to Fangtooth, VMs are not visible even though they are running

Apps and Virtualization

Stux August 4, 2025, 5:39pm 3

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HOWTO: Fix Virtual Machines: Cannot Retrieve Response in 25.04.2 Apps and Virtualization SCALE , VM , GUI	10	1195	December 24, 2025
TrueNAS 25.04.2 is Now Available! Announcements	62	3395	August 9, 2025
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After upgrading to Fangtooth, VMs are not visible even though they are running

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