License Key Not Available Wincc Logging For Runtime Advanced Link -
sections in your TIA Portal project tree. If any logs are defined, the system will demand a license at startup. Deleting these logs and recompiling the project can stop the error. Audit Trail/GMP Settings
: If your IPC was shut down abruptly (like a power failure), the license might be marked as "defective" Automation License Manager (ALM) License Location sections in your TIA Portal project tree