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VMware Remote Console (VMRC) requires hosts to enable SSL authentication (2007386)

Details

When you connect to a virtual machine on a host with SSL authentication disabled, you see the error:

 Unable to connect to the MKS: SSL required.

Solution

Before you can use VMware Remote Console (VMRC) in vSphere 5.0 to open a remote console to a virtual machine, you must enable SSL authentication on the ESX/ESXi host.
SSL authentication is enabled by default on ESX/ESXi hosts.
 
To enable SSL authentication, if it is disabled:
  1. Connect directly to the host as a user with root privileges. The ESXi 5.0 host can be accessed using Tech Support Mode (TSM). For more information, see Using Tech Support Mode in ESXi 4.1 and ESXi 5.0 (1017910).
  2. Open the /etc/vmware/config file using a text editor.
  3. Locate the security.host.ruissl entry.
  4. Change the value of security.host.ruissl from FALSE to TRUE.

    If it is set to no, change it to yes.

Note: If the security.host.ruissl entry is not available in the /etc/vmware/config file, add the entry and set it to appropriate value.

To enable SSL authentication from GUI:
  1. Directly connect to the host  using the vSphere Client.
  2. Click the Configuration tab.
  3. Under Software, click Advance settings.
  4. Expand Config > Defaults.
  5. Expand Security and select host.
  6. Select the option to enable SSL authentication.

Keywords

security, SSL authentication, VMRC, VMware Remote Console

Update History

04/25/2013 - Added procedure to enable SSL authentication from GUI

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