Unable to connect to VNC Server using your chosen security setting. Either upgrade vnc Server to a more recent version from RealVNC, or select a weaker level of encryption.

vnc viewer连接kvm控制台报错_libvirt

解决方案:

方案1、在vnc viewer上设置Encrption为 Prefer off

vnc viewer连接kvm控制台报错_kvm_02

方案2、在查看host上是否有配置vnc安全认证,有的话注释

grep "vnc_tls" /etc/libvirt/qemu.conf

然后重启libvirtd服务,关闭虚拟机重开