Are you seeing this error during on an IPC, or just while simulating your project in TIA Portal?
: The message may trigger if logging features are accidentally enabled: Historical Data : Check the "Historical data > Data logs"
This article provides a definitive guide to diagnosing, fixing, and permanently resolving this licensing conflict. Are you seeing this error during on an
If you are logging to a ?
Go to and enter the IP address of the Runtime PC. Go to and enter the IP address of the Runtime PC
To avoid the "License Key Not Available" error in the future, follow these best practices:
Open the application on the Runtime PC.
Do you see the logging license listed inside your ?
: The Automation License Manager Service might be frozen. Open the Windows Services manager ( services.msc ), find the Automation License Manager Service , right-click it, and select Restart . : The Automation License Manager Service might be frozen