License Key Not Available Wincc Logging For Runtime Advanced Work [extra Quality]

If the above steps do not resolve the issue, perform the following advanced troubleshooting:

and uncheck the box if it’s not required for your application. Compile and Check If the above steps do not resolve the

. It will not stop the simulation from working, though it may reappear every few minutes. : Background services or stuck processes can interfere

: Background services or stuck processes can interfere with the license check. Running the Reset_WinCC.vbs script safely resets these processes. Check the system alarms to ensure the "License

Trigger a log event (e.g., change a logged tag value or trigger an alarm). Check the system alarms to ensure the "License Key Not Available" message no longer appears. Troubleshooting Persistent Errors

The system was running on a temporary 21-day trial license that has since expired.

If the license is correctly installed but not recognized, the ALM database may be corrupted.