Message: ApplianceName was unable to upgrade the onQ Service on PNName to version VersionNumber. The current version on the PN is VersionNumber. The return status from the upgrade attempt was: ReturnStatus.

Cause: The most likely cause for this agent‑based PN upgrade is that the PN has too many other programs running thereby causing high CPU utilization, or the installer is currently installing a different program.

Solution: Fix the utilization problem. If that solution doesn’t work, reinstall the node software as outlined in (Alternative) To manually install or reinstall agent‑based Windows PN software: or (Agent‑based Linux PNs) Enroll protected nodes.