# Revision history [back]

Have you checked if your nova novnc service is running properly or if your neutron agents are running as well? There may also be services that are stuck.

I would suggest you try the following:

If Ubuntu:

cd /etc/init.d; for i in $(ls nova-*); do service$i restart; done
cd /etc/init.d; for i in $(ls neutron-*); do service$i restart; done


If CentOS:

cd /etc/init.d; for i in $(ls openstack-neutron-*); do service$i restart; done
cd /etc/init.d; for i in $(ls openstack-nova-*); do service$i restart; done


After running these two commands try vnc again and let me know what happens.