title: Nuget prompting credentials
body: <p>I am using Visual Studio 2019. While building a solution its asking for credentials and build is getting failed. api.nuget.org asking username and password. 
  Note: I am using public default nuget package</p>
  
  <p><a href="https://i.stack.imgur.com/7ppUo.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/7ppUo.jpg" alt="enter image description here"></a></p>