exe c++ boot at windows start but not working, run manually it works

[VictorN]

- To run this application at start of windows, I created a key regedit (HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Run), the program starts without problems

Try to move it from HKEY_LOCAL_MACHINE to HKEY_CURRENT_USER. It looks like your App is started too early: before your user profile will be loaded.