2V0-15.25 Question #9: Real Exam Question with Answer & Explanation

The correct answer is A. The vpxd service is not running. B. The SSO Service is not running.. The vSphere Client "no healthy upstream" error is a classic indicator that one or more vCenter backend services are not running or responding, preventing the reverse proxy layer (envoy / nginx) from routing requests to the appropriate upstream services. Two services in particular

Question

An administrator is attempting to log into the vCenter using the vSphere Client but receives an error stating "no healthy upstream" What are two possible causes for this? (Choose two.)

Options

AThe vpxd service is not running.
BThe SSO Service is not running.
CPort 443 is not opened between the local machine and the vCenter.
DThe administrator logged in with the root account.
EThe vmware-rbd-watchdog service is not running.

Explanation

The vSphere Client "no healthy upstream" error is a classic indicator that one or more vCenter backend services are not running or responding, preventing the reverse proxy layer (envoy / nginx) from routing requests to the appropriate upstream services. Two services in particular are known root causes: A . vpxd service not running vpxd is the core vCenter Server service responsible for inventory, host management, and client interaction. If vpxd is stopped, crashed, or restarting, the vSphere Client cannot communicate with backend APIs, resulting in the "no healthy upstream" condition. B . SSO (vmware-stsd / identity service) not running Authentication in vCenter depends on the SSO/Identity service. If SSO is unavailable, login sessions cannot be validated, and vCenter marks the upstream service as unhealthy.

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