Siemens differentiates between several licenses:
If you installed a Base RT license but try to use logging, the system reports the license as unavailable. license key not available wincc logging for runtime advanced
Damaged license cache files are a known issue in older TIA versions. Siemens differentiates between several licenses:
Create a minimal project:
Windows sometimes disables background services. If you installed a Base RT license but
Few things are more frustrating than spending hours configuring your HMI project, only to be greeted by a cryptic red error message when you hit "Start Runtime." If you are seeing the error "License key not available for WinCC Logging for Runtime Advanced," you are not alone.
This specific error halts data logging, stops archiving, and prevents you from viewing historical trends. In this post, we’ll break down exactly why this happens and, more importantly, how to fix it.