Windows .exe Can't connect

[AkioYoutubeur]

When I chosse a modpack(any one of them) it tells me : "Invalid username or password"
Is it a problem of having Minecraft or not because some launchers don't require it so I did't take it !
(Sorry for my english but I'm francophone)

 

[joaopms]

It says everything: your username or password is invalid. If you have migrated to a Mojang account you should use your email instead of your username.