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Follow this systematic plan to resolve the error, regardless of its root cause.
If logging is configured but not needed, delete all log configurations in the project. This will often immediately resolve the error upon the next Runtime startup. This public link is valid for 7 days
Before buying anything, check if the license is already present on your machine.
Siemens WinCC Runtime Advanced is a robust solution for HMI applications, but encountering a "license key not available" error for logging can halt your data collection instantly. This issue typically occurs when the system attempts to execute historical data logging or alarm archiving without a valid "WinCC Logging for Runtime Advanced" license. Can’t copy the link right now
WinCC Runtime Advanced requires modular licensing. The base software license covers standard HMI operations, screens, and basic communication. It does not cover historical data storage.
When you see this message, the WinCC Runtime engine has detected that your project includes logging functions—such as Data Logs or Alarm Logs—but cannot find the required license key on the local machine or a connected license server. If logging is configured but not needed, delete
When simulating a project in TIA Portal on your engineering PC, the simulation tool behaves exactly like the actual Runtime. If your project has logging enabled, the simulation will also prompt for the logging license key unless that key is transferred to your engineering station. order codes for the logging license or instructions on how to transfer keys using a USB drive?
: Check the status in ALM. If marked defective, you may need to contact Siemens Technical Support to have it restored. 3. Check Project Configuration