: If the license was installed but the IPC was shut down improperly (e.g., power failure), the license may be marked as "defective" in the Automation License Manager (ALM) .
When starting the WinCC Runtime Advanced application (e.g., from TIA Portal), an error message appears stating that the required license key for WinCC Logging is not available. As a result, logging functionality (archiving process values, alarms, or data logs) may be disabled or the runtime may fail to start fully. license key not available wincc logging for runtime advanced