Symptoms:
After upgrading from ESXi 5.x to ESXi 6.0 or later, you experience these symptoms:
- Logging in or accessing the ESXi host through the Host Client UI fails.
- You see an error similar to:
503 Service Unavailable (Failed to connect to endpoint: [N7Vmacore4Http16LocalServiceSpecE:0x1f0daf08] _serverNamespace = /ui _isRedirect = false _port = 8308).