SNE shows consistently high CPU usage and sluggish response

SNE engines show incorrect time or drift, especially M4-SNE models

Prevent temporary overrides from becoming permanent problems

Implement proactive fault detection instead of waiting for complaints

Engine remains offline in Site Director tree after downloading new archive with SCT

Operators cannot connect over HTTPS; Workbench shows SSL/TLS errors

Users cannot log in or station appears offline after applying security hardening

How to proceed when assigned to fix a controller with no program loaded and no documentation

NAE/SNE devices get stuck at Connecting status after moving to new network infrastructure

Custom PX graphics no longer display on touchscreen devices after upgrading Niagara from 4.11 to 4.15+

BACnet MS/TP devices drop offline when all units power up simultaneously due to mixed cable gauges.

Changing a setpoint in Metasys UI doesn't update the controller. Value reverts or doesn't register.

Metasys 11 stops working after Windows update to Windows 11. Login fails or system becomes unresponsive.

Metasys UI is slow to load, server is sluggish, CPU stays above 70%. Trends and graphics take 10+ seconds.

Metasys UI suddenly shows all readings as "????" across all graphics. Operators can't read setpoints or status.

Workbench throws "Cannot Load Help Files" error when opening help or accessing webstation graphics.

JACE shows "Authentication Error" when connecting back to Supervisor. Scheduling and remote commands fail.

Points repeatedly go "orange" (fault) in Workbench view after override release or network interruptions.

Niagara AX 3.8 license won't activate even with active SMA and correct Host ID. Common on upgrades or VM migrations.

Station suddenly stops responding, displays "Watchdog Timeout" in logs, and may reboot or freeze.

Common issue where Niagara station fails to start after a Windows update due to Java path changes or service dependencies.