| Error Message | Likely Cause | Solution | |---------------|----------------|-----------| | "No license for S7-PLCSIM" | Missing or expired license | Re-run ALM; install trial or transfer license key | | "Incompatible version" | TIA Portal V15.1 not installed | PLCSIM V15.1 requires TIA Portal V15.1 exactly | | "Virtual switch failed to start" | Hyper-V or other virtual adapters conflict | Disable Hyper-V or Docker in Windows Features | | "Simulation cannot run because WinPcap is missing" | Network capture driver missing | Install WinPcap or Npcap manually | | "CPU goes STOP immediately" | Program error (e.g., division by zero) | Check diagnostic buffer in TIA Portal |
Last updated: September 2025 – Information based on Siemens public documentation and industry best practices. Simatic S7-plcsim V15.1 Download