Can't join the server..

[PixelVarnox]

Hey, everytime I want to join the server it say: (Failed to verify your Username!) So can you tell me why?

 

[Yaku]

This is most likely on the user side. Here are some general troubleshoots. If one doesnt work, try the next one:
1. Log out of your account and back in again (In the launcher. "switch user" then "log out")
2. Restart your computer
3. reinstall the minecraft launcher.

 

[PixelVarnox]

Thank you!