Remember that Siemens licensing is designed for reliability and compliance, not convenience. Patience, methodical checking, and the use of ALM’s diagnostic tools will always lead to a resolution. If all else fails, Siemens technical support (requiring a valid service contract) can run deep diagnostics and, in rare cases, rehost a damaged license.
Ensure you are using the latest version of Automation License Manager available from the Siemens Industry Online Support (SIOS) site.
: Check your Alarm settings for any "Log" or "Archive" checkboxes and uncheck them. Recompile and Download
If these are empty but you still get the error, check if a "System Diagnostic" or "Audit" feature is enabled, as these also trigger logging requirements. 2. Check Automation License Manager (ALM) The ALM is the central hub for all Siemens licenses. Remember that Siemens licensing is designed for reliability
To help narrow down the exact cause on your system, please let me know:
To proceed efficiently, let us isolate exactly where your configuration stands. Please share:
: If you do not need logging, you can remove the error by deleting all configured Data Logs or Alarm Logs in your TIA Portal project under Runtime Settings . Ensure you are using the latest version of
If logging is necessary, check the target PC running the HMI:
Go to the section in the project tree. Delete any unused or accidentally created Data Logs or Alarm Logs.
After license installation, restart the ALM service or reboot the runtime PC. After license installation
: In Runtime Settings > Good Manufacturing Practice , ensure the checkbox for GMP/Audit Trail is unchecked, as this also triggers advanced licensing requirements. Troubleshooting Steps
The runtime will continue to simulate logging functionalities for trial purposes, though it is not permissible or stable for industrial production use.
Resolving the "License Key Not Available" Error in WinCC Logging for Runtime Advanced