The following steps outline how to verify or update the Security Server options:

1. Log on to the Horizon Administrator console using an AD account that has administrative permissions within Horizon.
2. Open the View Configuration | Servers page within the console.
3. Select the Security Servers tab in the Servers window.
4. Highlight the Security Server you wish to update, and click on Edit to open the Edit Security Server window as shown in the following screenshot:

In the event that either the external URL or IP address of the Security Server is changed, it should be changed in this page to ensure that Horizon will function properly.