Hi, I am new to Libvirt and Qemu.I have installed Libvirt 6.10 and qemu-kvm 4.2.0 on CentOS8. I configured and built libvirt based on instructions from https://libvirt.org/compiling.html. But when i tried to create a VM using virsh it shows the following error: *# virsh create /home/abc.xml* *error: Failed to create domain from /home/abc.xmlerror: invalid argument: could not find capabilities for arch=x86_64 domaintype=kvm * When i check the hypervisor capabilities ,it doest show qemu in guest domain type. # virsh capabilities As per the reply from this mailing-list i passed an option while building the libvirt. ie., *meson build -Dsystem=true* It worked for me. But Now, i tried to migrate my work on a new machine with same os and same version as above. As part of,I configured and built libvirt.Also passed *meson build -Dsystem=true *while building libvirt. After installation I tried with *# virsh create /home/abc.xml* It results in the same error shown below. *error: Failed to create domain from /home/abc.xmlerror: invalid argument: could not find capabilities for arch=x86_64 domaintype=kvm * I stuck here. Thanks for the help in advance. Shafnamol.N