Alex followed these steps to resolve the issue, and you can too:
The message appears because WinCC Runtime Advanced requires a separate, additional license to perform any historical data logging . Why this happens
If you are running a Siemens TIA Portal HMI project and encounter the popup message your logging features have stopped working. This error occurs because WinCC Runtime Advanced requires a specific, separate license to archive data, separate from the standard runtime license. Alex followed these steps to resolve the issue,
If ALM shows the license, but WinCC does not, review the internal logs:
A very interesting scenario can occur: your project might have been originally created for a Comfort Panel and later migrated to WinCC Runtime Advanced. Comfort Panels include Logging functions in the base package, but WinCC Runtime Advanced does not. If Logging functions remain configured (even if not actively used), the system will still request the license. If ALM shows the license, but WinCC does
Archiving historical alarm states and messages for audit trails.
: Covers the basic operation of the HMI on a PC. Archiving historical alarm states and messages for audit
The message "License key not available! WinCC Logging for Runtime Advanced" is ultimately a straightforward statement: the system is working exactly as designed and telling you which specific license it expects. By understanding the licensing model, verifying your installation, and methodically working through the troubleshooting steps above, you can resolve this issue quickly and get back to monitoring and controlling your processes.