WinCC maintains diagnostic logs that often contain detailed error messages. Navigate to \Siemens\WinCC\Diagnostics and open the WinCC_Sys_xx.log file. Search for entries containing "license", "logging", or "archive" around the time of the error. These logs may provide more specific error codes than the pop-up message.
Under the hood, the WinCC Licensing Manager is performing a routine check. When your project calls for a Logging function that requires a license not found on the system, the manager triggers this alert. It might appear right at the start or pop up periodically to remind you of the unlicensed function being accessed.
: The installed license version must match the software version (e.g., a V16 license may not work for a V17 project unless it is explicitly an upgrade license).
Fixing the "License Key Not Available" Error in WinCC Logging for Runtime Advanced WinCC maintains diagnostic logs that often contain detailed
: Rarely, a core installation file or registry entry may become corrupted, preventing the license manager from functioning as intended.
Perform a "Software (rebuild all)" and download the updated project to the Runtime PC. 5. Common "Ghost" License Errors Sometimes, errors appear for services you aren't using.
Before diving into solutions, let’s quickly clarify what "WinCC Logging" actually is. In the world of SIMATIC WinCC (TIA Portal), "Logging" refers to the system responsible for archiving process values (Tag Logging) and alarms (Alarm Logging) over time. This is an invaluable function for tracking production trends, analyzing downtime, and complying with quality documentation requirements. These logs may provide more specific error codes
For a , the USB stick containing the license must be physically plugged into the machine running WinCC Runtime, and ALM must detect it.
To eliminate the warning popup and ensure your logging functions operate smoothly, you must install the proper license key via the . 1. Identify the Exact Missing License
有时 ALM 中明明显示可用的许可证，但 WinCC 仍然提示缺失。这种情况往往是因为许可证被标记为“”。常见原因：IPC 未正常关机（如突然断电），导致许可证未被释放。 It might appear right at the start or
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.
Select the license and use the License → Repair option in ALM.