This is strange. This error message only appears if PLCSIM is not started.
It is checked if the process “Siemens.Simatic.PlcSim.VplcHost” is running.
Is this process started on your system. See Windows Task Manager.
Dear friends
I’ve the same problem, I’ve started both factory I/O and PLCsim advanced as administrator but still there is no connection even following connection instruction step by step
Hi @bob.chen,
This error occurs when Factory I/O can’t find S7-PLCSIM. Like @grzegorz.galazka said, did you try running both S7-PLCSIM and Factory I/O as administrator?
Hi @hassanheha,
Could you please double-check this part of the tutorial? When I was testing it, I remember not being able to connect FIO due to step 6 being skipped.