NuGet.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <!-- defaultPushSource key works like the 'defaultPushSource' key of NuGet.Config files. -->
    <!-- This can be used by administrators to prevent accidental publishing of packages to nuget.org. -->
    <config>
        <add key="defaultPushSource" value="https://contoso.com/packages/" />
    </config>

    <!-- Default Package Sources; works like the 'packageSources' section of NuGet.Config files. -->
    <!-- This collection cannot be deleted or modified but can be disabled/enabled by users. -->
    <packageSources>
        <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
    </packageSources>

    <!-- Default Package Sources that are disabled by default. -->
    <!-- Works like the 'disabledPackageSources' section of NuGet.Config files. -->
    <!-- Sources cannot be modified or deleted either but can be enabled/disabled by users. -->
</configuration>