I tried the root account and the SSO administrator account, and I get the same error.
Here are some entries I found in vsphere_client_virgo.log:
[2020-06-18T12:45:00.498Z] [ERROR] ate-service-thread-pool-1107 com.vmware.vise.vim.vapi.DefaultVapiConnectionControl Maximum number of attempts reached while trying to call com.vmware.vcenter.certificate_management.vcenter.tls.get
[2020-06-18T12:45:00.509Z] [ERROR] http-nio-5090-exec-100 70003584 100186 200007 com.vmware.vise.mvc.exception.GlobalExceptionHandler Exception handled while processing request for /ui/certificate-ui/ctrl/certificates/machine-cert?endPoint=myservername.mydomainname.com: com.vmware.vapi.std.errors.Unauthenticated: Unauthenticated (com.vmware.vapi.std.errors.unauthenticated) => {
messages = [LocalizableMessage (com.vmware.vapi.std.localizable_message) => {
id = vapi.method.authentication.required,
defaultMessage = This method requires authentication.,
args = [],
params = <null>,
localized = <null>
}],
data = <null>,
errorType = UNAUTHENTICATED,
challenge = <null>
}
[2020-06-18T12:45:00.632Z] [ERROR] ate-service-thread-pool-1108 com.vmware.vise.vim.vapi.DefaultVapiConnectionControl Maximum number of attempts reached while trying to call com.vmware.vcenter.certificate_management.vcenter.trusted_root_chains.list
[2020-06-18T12:45:00.641Z] [ERROR] http-nio-5090-exec-122 com.vmware.vise.mvc.exception.GlobalExceptionHandler Exception handled while processing request for /ui/certificate-ui/ctrl/certificates/trusted-root-list?endPoint=myservername.mydomainname.com: com.vmware.vapi.std.errors.Unauthenticated: Unauthenticated (com.vmware.vapi.std.errors.unauthenticated) => { messages = [LocalizableMessage (com.vmware.vapi.std.localizable_message) => { id = vapi.method.authentication.required, defaultMessage = This method requires authentication., args = [], params = , localized = }], data = , errorType = UNAUTHENTICATED, challenge = }
Thanks