Hamachi "Failed to connect to engine" error fix

Do you need to fix this Hamachi problem? Read more and find out.

I have been using Hamachi for a while, mostly for Warframe (read more here!). Sometimes, I get this "Failed to connect to engine" error and could not turn Hamachi on. This is how you fix it.

Go to Start->Run->type "services.msc". Alternatively, hold the key combination Windows+R to open the Run module, type in "services.msc". In both cases, run the program.

Click on OK to run the program and this should appear. Find the "LogMeIn Hamachi Tunneling Engine". If you could not connect to the engine before, chances are it is in the state "stopping", "starting" or not even started. Turn it on. If it is already started and you couldn't connect, restart the engine.

If it still doesn't work, check if your antivirus/firewall is blocking Hamachi and allow it. If push comes to shove, restart the computer, and try these again.