Hi @makechinafreedom, you might want to write down your question rather than simply posting screenshots seeing they aren’t searchable.
What’s the current status of your problem? Your screenshot suggests that the port used by the n8n desktop app was blocked by another application. Did rebooting your machine clear out any processes holding on to that port? If not, you might want to find out what is blocking this port as the next step. See for example here for information on how to do so on Windows:
I reboot my pc and cleaning all app , still the same problem…
So which other process is listening on port 5679 that prevent the n8n desktop app from starting?