Unable to install VAC management agent on ... - Veeam Software
www.veeam.com › kb2366Nov 14, 2017 · Adding the VCC server installs the VAC management agent on it which is required for communication between the two products. The error above means that the VAC service was unable to re-register the existing management agent. Solution 1. Manually remove the existing VAC Communication Agent from the Control Panel snap-in on the VCC server: 2.