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OPERATIONAL DEFECT DATABASE
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Selecting System Configuration Tab under Administration from HTML 5 Client (vsphere-ui) loads and empty pageIn log file /var/log/vmware/vsphere-ui/vsphere_client_virgo.log, you see entries similar to : [2020-03-06T11:28:13.149-05:00] [ERROR] cm-service-thread-pool-230 70000199 100005 200002 com.vmware.vsphere.client.cm.util.ServerPropertyValueExtractor com.vmware.vapi.std.errors.Unauthenticated: Unauthenticated (com.vmware.vapi.std.errors.unauthenticated) => { messages = [LocalizableMessage (com.vmware.vapi.std.localizable_message) => { id = vapi.security.authentication.invalid, defaultMessage = Unable to authenticate user, args = []}], data = <null>} java.lang.RuntimeException: com.vmware.vapi.std.errors.Unauthenticated: Unauthenticated (com.vmware.vapi.std.errors.unauthenticated) => { messages = [LocalizableMessage (com.vmware.vapi.std.localizable_message) => { id = vapi.security.authentication.invalid, defaultMessage = Unable to authenticate user, args = []}], data = <null> In log file, /var/log/vmware/applmgmt/applmgmt.log, you see entries similar to : 2020-03-06T16:00:13.137 [21262]ERROR:vmware.appliance.extensions.authentication.authentication_sso:Unhandled exception during SAML token validationTraceback (most recent call last): File "/usr/lib/python3.5/urllib/request.py", line 1254, in do_open h.request(req.get_method(), req.selector, req.data, headers) File "/usr/lib/python3.5/http/client.py", line 1107, in request self._send_request(method, url, body, headers) File "/usr/lib/python3.5/http/client.py", line 1152, in _send_request self.endheaders(body) File "/usr/lib/python3.5/http/client.py", line 1103, in endheaders self._send_output(message_body) File "/usr/lib/python3.5/http/client.py", line 934, in _send_output self.send(msg) File "/usr/lib/python3.5/http/client.py", line 877, in send self.connect() File "/usr/lib/python3.5/http/client.py", line 1261, in connect server_hostname=server_hostname) File "/usr/lib/python3.5/ssl.py", line 385, in wrap_socket _context=self) File "/usr/lib/python3.5/ssl.py", line 760, in __init__ self.do_handshake() File "/usr/lib/python3.5/ssl.py", line 996, in do_handshake self._sslobj.do_handshake() File "/usr/lib/python3.5/ssl.py", line 641, in do_handshake self._sslobj.do_handshake()socket.timeout: _ssl.c:703: The handshake operation timed out Note:The preceding log excerpts are only examples. Date, time, and environmental variables may vary depending on your environment.
This issue is observed in environments with Proxy configured on vCenter Server Appliance and the connection to authenticate user fails while going through proxy.
Connect to the VAMI Page of vCenter Server Appliance (https://vcsa_fqdn:5480)Remove the Proxy Configuration, refer to Configure the DNS, IP Address, and Proxy Settings to navigate to the Proxy Configuration PageReboot the vCenter Server ApplianceRetry loading System Configuration Tab