You can configure Update Manager to let other software initiate remediation of PXE booted ESXi hosts. The remediation installs patches and software modules on the hosts, but typically the host updates are lost after a reboot.

The global setting in the Update Manager Configuration tab enables solutions such as ESX Agent Manager or Cisco Nexus 1000V to initiate remediation of PXE booted ESXi hosts. In contrast, the Enable patch remediation of powered on PXE booted ESXi hosts setting in the Remediate wizard enables Update Manager to patch PXE booted hosts.

To retain updates on stateless hosts after a reboot, use a PXE boot image that contains the updates. You can update the PXE boot image before applying the updates with Update Manager, so that the updates are not lost because of a reboot. Update Manager itself does not reboot the hosts because it does not install updates requiring a reboot on PXE booted ESXi hosts.


Required privileges: VMware vSphere Update Manager.Configure


  1. Use the vSphere Client or the vSphere Web Client to connect to a vCenter Server system with which Update Manager is registered.
  2. Depending on the client you use to connect to vCenter Server perform the following steps.
    Client Steps
    vSphere Web Client
    1. On the Manage tab, under Settings, click Host/Cluster Settings.
    2. Click Edit.
    vSphere Client
    1. On the Configuration tab, under Settings, click ESX Host/Cluster Settings.
  3. To enable installation of software for solutions on PXE booted ESXi hosts, select Allow installation of additional software on PXE booted ESXi hosts.
  4. Click Apply.