To prevent runtime interruptions in production environments, always cross-reference your TIA Portal HMI configuration against your physical Siemens license inventory before deployment. If your system relies on trend views, historical tables, or long-term alarm storage, the license is a mandatory requirement that must be factored into your system architecture costs.
typically appears because WinCC Runtime Advanced requires a dedicated, separate license for any historical data logging. Unlike Comfort Panels where logging is often included, PC-based Runtime Advanced systems treat logging (Tag Logs and Alarm Logs) as an optional package. Siemens SiePortal Common Scenarios and Fixes Missing Optional License : Even if you have a valid WinCC Runtime Advanced PowerTags license, you must also purchase and install the "WinCC Logging for Runtime Advanced"
Disclaimer: This information is based on standard Siemens TIA Portal WinCC Runtime Advanced licensing documentation.
ALM lists the correct license key, but it shows as "defective". An abrupt shutdown corrupted the active cluster key. Unlike Comfort Panels where logging is often included,
A dedicated additive license that unlocks the archiving and historical database functionality. Step-by-Step Resolution Workflow
Leftover trend views or active data archive tags remain inside the HMI app.
Siemens uses a modular licensing structure. The base license for WinCC Runtime Advanced covers standard HMI functionalities like graphics, animations, user administration, and basic communications. However, advanced functionalities require supplemental licenses. An abrupt shutdown corrupted the active cluster key
Here is the breakdown of why this specific error occurs:
the official logging license to the active station via ALM. Logging is unneeded, but the pop-up continues to show.
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. and basic communications. However
: Ensure the Runtime is closed properly. If the PC crashes or loses power, the license may not release correctly and can appear as "defective" upon restart. WinCC License DEMO Mode: Troubleshooting Fix | Siemens
If logs exist but are not being used, right-click and them.
If you don't need logging, check your project for configured or Alarm Logs and delete them to remove the license requirement. SmartServer Popup