KVM Virt-Manager Error: No active connection to Installed on

Question

When I tried to install new virtual machine in virt-manager, virtualization - localhost (QEMU) is not connected.

It shows Error: No active connection to installed on. How to fix this problem.

Could you please be more specific: When and where does it show the error? Is that the complete error message? Please add screenshots of your virt-manager window and the error message to yourquestion. — ridgy, Jul 05 '17 at 13:23

score 10 · Answer 1 · edited Nov 05 '24 at 01:35

10

You are likely going to need to make sure your user owns the libvirt socket

sudo chown $USER:$USER /var/run/libvirt/libvirt-sock

edited Nov 05 '24 at 01:35

Jab

answered Feb 28 '22 at 14:04

David SHainidze

score 5 · Answer 2 · edited Mar 29 '23 at 10:17

5

Verify you have all packages you need

sudo apt install -y qemu-kvm libvirt0 libvirt-bin virt-manager bridge-utils
sudo systemctl enable libvirt-bin

Verify that libvirtd and libvirt-bin are up and running

sudo service libvirtd status
sudo service libvirt-bin status

edited Mar 29 '23 at 10:17

kurdtpage

answered Mar 01 '18 at 18:10

Zeh

score 5 · Answer 3 · answered Feb 06 '20 at 18:25

5

Make sure your username is part of the libvirt group. Try running sudo adduser <username> libvirt. This fixed the problem for me.

answered Feb 06 '20 at 18:25

ayeiser

sudo usermod -a -G libvirt if the user already exists – bobmcn Apr 19 '23 at 00:31

score 3 · Answer 4 · answered Sep 29 '22 at 05:05

3

Try restarting the libvirtd service:

sudo service libvirtd stop
sudo service libvirtd start

answered Sep 29 '22 at 05:05

kurdtpage

This worked for me, using virt-manager-5.0.0-1.fc41.noarch on cpe:/o:fedoraproject:fedora:41. – RokeJulianLockhart Mar 28 '25 at 16:16

score 3 · Answer 5 · answered Mar 14 '23 at 20:46

3

In my case I had the error when trying to run it right after the installation.

I tried restarting the libvirtd service in that same session but with no success.

I tried logging out and logging back in still with no success.

But after rebooting the machine, all was fine.

answered Mar 14 '23 at 20:46

Wadih M.

2

Most of the other answers here are listing out stuff you definitely shouldn't have to do on a modern linux distro. Rebooting did the trick for me just fine, thanks. – JP Duffy Nov 22 '23 at 14:31

5 Answers5