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

The storage pool must be active before the storage it contains can be used.

By default the storage pool named default is active and autostarted, but it might have been reconfigured on your system.

You can start it yourself with virsh, e.g., to start the pool:

sudo virsh pool-start default

And to mark the pool as autostarted at boot time:

sudo virsh pool-autostart default

The easiest way to get all of the required drivers into a Windows guest is to use the SPICE Guest Tools Windows installer. Downloading spice-guest-tools-latest.exe should always give you the latest version.

This package includes the Windows QXL/WDDM display driver along with all of the virtio drivers for virtual hardware provided by KVM, and installs all of them at once.

Note that KVM does not provide file sharing to Windows guests. You still need to set up Samba yourself for that.