License Key Not Available Wincc Logging For Runtime Advanced Link Patched < DIRECT 2027 >

Troubleshooting: "License Key Not Available" for WinCC Logging

The Ultimate Fix: Acquiring the Correct License

If the troubleshooting above confirms you lack the license, you must purchase it. The correct part numbers (MLFB) are: Myth: "Reinstalling Windows fixes the license error

This error typically appears when you start the Runtime Advanced application (often part of the TIA Portal or older WinCC flexible Advanced projects) or when attempting to access the data logging (archiving) functionality. It indicates that while your HMI project is configured to log data (trends, alarms, recipes), the software running on the target PC cannot find a valid license to allow that specific feature. In ALM, right-click the license → Check consistency

Myth: "Reinstalling Windows fixes the license error."

To summarize the fix:

Your path forward is clear:

• In ALM, right-click the license → Check consistency
• Ensure the license is transferred to the local PC (not left on a USB stick unless stick is always plugged in)
• Restart the SIAX S7 USB License Manager service (Windows services)

It sounds like you are encountering the "License key not available" error for WinCC Logging when trying to use the Runtime Advanced link in Siemens TIA Portal. Myth: "Reinstalling Windows fixes the license error