WinCC calls ALM_CheckFeature(L"LoggingRuntimeAdvanced") every 30 seconds. If failed, logging service stops, and error appears in Runtime → Diagnostics → License .

If still unresolved:

License Key Not Available Wincc Logging For Runtime Advanced 2021

WinCC calls ALM_CheckFeature(L"LoggingRuntimeAdvanced") every 30 seconds. If failed, logging service stops, and error appears in Runtime → Diagnostics → License .

If still unresolved: