NSX Manager is unable to deploy Guest Introspection and an alarm error is displayed.


Attempting to install Guest Introspection (GI) will cause the alarm error “Installation of deployment unit failed, please check if ovf/vib urls are accessible. This error occurs quickly after attempting installation.


The NSX Manager is unable to deploy or install a GI VM and no VM is deployed.


  1. Verify if ESX Agent Manager (EAM) is up and running. On the Network & Security > Installation and Upgrade > Host Preparation tab, the installation status of the EAM connection appears as Not Ready after the NSX Manager or EAM service is restarted. Click Resolve. See About vSphere ESX Agent Manager (EAM)
  2. If EAM is not running, or if the EAM page has issues loading and rendering, restart EAM service.
  3. Check EAM logs for authentication issues. See Network port requirements for VMware NSX for vSphere 6.x (2079386) and ESX Agent Manager solution user fails to log in after replacing the vCenter Server certificates in vSphere 6.0 (2112577).
  4. Verify that all required ports are open between ESXi hosts, vCenter Server and NSX Manager, and are not being blocked by a Firewall. See TCP and UDP Ports required to access VMware vCenter Server, VMware ESXi and ESX hosts, and other network components (1012382).
    vSphere 6.x supports VIB downloads over port 443 (instead of port 80). This port is opened and closed dynamically. The intermediate devices between the ESXi hosts and vCenter Server must allow traffic using this port.