The runtime will continue to simulate logging functionalities for trial purposes, though it is not permissible or stable for industrial production use.
The "License key not available" message typically triggers under three specific scenarios:
ALM lists the correct license key, but it shows as "defective". An abrupt shutdown corrupted the active cluster key. If you do not need historical trends, you
If you do not need historical trends, you can stop the license check by turning off all log requests inside your TIA Portal project configuration. WinCC Logging for Runtime Advanced - SiePortal
Historical data archiving—which includes logging process tags and alarm logs—is treated as an add-on option. Even if your primary WinCC Runtime Advanced license is fully active and valid, the runtime engine will trigger a license warning the moment it attempts to execute a logging task if the specific license is missing or unrecognized. Common Scenarios Triggering the Error but the pop-up continues to show.
When developing HMI/SCADA applications using Siemens TIA Portal, particularly with , engineers often encounter the frustrating error message: "License key not available! WinCC Logging for Runtime Advanced."
Step 1: Verify the License Status in Automation License Manager (ALM) If you do not need historical trends, you
the official logging license to the active station via ALM. Logging is unneeded, but the pop-up continues to show.
Verify that the status indicates "Valid" and check the version number. A v17 license, for example, will not authorize a v18 or v19 runtime environment. 2. Check the Project Configuration in TIA Portal
Look for the specific entry: .
If the license is missing, you must acquire the correct Siemens item. Siemens offers these licenses via physical USB dongles or Online Software Delivery (OSD).