I have a "NuGet Installer" Step with the package source "%teamcity.nuget.feed.auth.server%". But where do I submit the authentication credentials? I have an entry in Build Features as "NuGet Feed Credentials" but it seems to be ignored because in the Build Log I got the error that I need to insert my credentials. I'am using 9.1.7 of TeamCity. This is a part of the documentation: "Since TeamCity 9.1.4, when using TeamCity as the internal Nuget server, the credentials specified via this build feature are ignored; the internal TeamCity authentication is used." what does this actual mean?