# Virtual Manager

# Errors when starting new VMs on Virtual Machine

Error starting domain: requested operation is not valid: network 'default' is not active

[![image.png](https://wiki.tinod.net/uploads/images/gallery/2023-03/scaled-1680-/image.png)](https://wiki.tinod.net/uploads/images/gallery/2023-03/image.png)

```bash
─$ sudo virsh net-list --all       
[sudo] password for csr: 
 Name      State      Autostart   Persistent
----------------------------------------------
 default   inactive   no          yes

                                                                                                                                                          
┌──(csr㉿kali)-[/etc]
└─$ sudo virsh net-start default
Network default started

                                                                                                                                                          
┌──(csr㉿kali)-[/etc]
└─$ sudo virsh net-list --all   
 Name      State    Autostart   Persistent
--------------------------------------------
 default   active   no          yes

                                                            
```

# Authentication error when launching virtual manager

Launching virtual manager as non root users gives authentication error.

check user if part of libvirt group if not add user to group

```shell
csr@MainPC:/etc/modprobe.d$ groups csr
csr : csr cdrom floppy sudo audio dip video plugdev users netdev bluetooth lpadmin scanner
csr@MainPC:/etc/modprobe.d$ sudo usermod -a -G libvirt csr
csr@MainPC:/etc/modprobe.d$ groups csr
csr : csr cdrom floppy sudo audio dip video plugdev users netdev bluetooth lpadmin scanner libvirt
csr@MainPC:/etc/modprobe.d$ cd
csr@MainPC:~$ 

```

launch virtual manager