Open Automation License Manager on the runtime PC. Look for:
requires a separate, dedicated license for historical data functions like Tag Logging Alarm Logging Open Automation License Manager on the runtime PC
: If you do not actually need logging, check your project for any configured Data Logs or Alarm Logs and delete them to stop the license request. This error indicates a discrepancy between the licensed
: If the license was previously working but suddenly shows as "not available," it may be marked as "defective" in the Automation License Manager (ALM) Open Automation License Manager on the runtime PC
In industrial automation environments utilizing Siemens TIA Portal and WinCC, the error message represents a critical interruption to Human-Machine Interface (HMI) operations. This error indicates a discrepancy between the licensed functionality requested by the runtime application and the available authorization keys present on the target system.