diff --git a/cake/msbuild.cake b/cake/msbuild.cake
index 8bd1234ee7..cef3b6839c 100644
--- a/cake/msbuild.cake
+++ b/cake/msbuild.cake
@@ -5,17 +5,26 @@ DirectoryPath OUTPUT_SYMBOLS_NUGETS_PATH = MakeAbsolute(ROOT_PATH.Combine("outpu
 
 var NUGETS_SOURCES = new [] {
     OUTPUT_NUGETS_PATH.FullPath,
-    "https://api.nuget.org/v3/index.json",
-    "https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json",
-    "https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet6/nuget/v3/index.json",
-    "https://pkgs.dev.azure.com/azure-public/vside/_packaging/xamarin-impl/nuget/v3/index.json",
-    "https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json",
-    "https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-aspnetcore-7c57ecbd-3/nuget/v3/index.json",
-    "https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-runtime-4822e3c3-5/nuget/v3/index.json",
-    "https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-windowsdesktop-59fea7da-4/nuget/v3/index.json",
-    "https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-emsdk-1ec2e17f-4/nuget/v3/index.json"
 };
 
+string[] GetNuGetSources()
+{
+    // load all the sources from nuget.config
+    var xdoc = XDocument.Load("nuget.config");
+    var xmlns = xdoc.Root.Name.Namespace;
+    var adds = xdoc.Elements(xmlns + "configuration")
+        .Elements(xmlns + "packageSources")
+        .Elements(xmlns + "add")
+        .Select(x => x.Attribute("value").Value)
+        .ToList();
+
+    // add the NUGETS_SOURCES because it may contain local folders
+    adds.AddRange(NUGETS_SOURCES);
+
+    // return all
+    return adds.ToArray();
+}
+
 void RunNuGetRestorePackagesConfig(FilePath sln)
 {
     var dir = sln.GetDirectory();
@@ -23,7 +32,7 @@ void RunNuGetRestorePackagesConfig(FilePath sln)
     EnsureDirectoryExists(OUTPUT_NUGETS_PATH);
 
     var settings = new NuGetRestoreSettings {
-        Source = NUGETS_SOURCES,
+        Source = GetNuGetSources(),
         NoCache = true,
         PackagesDirectory = dir.Combine("packages"),
     };
@@ -92,8 +101,8 @@ void RunMSBuild(
                 c.Properties [prop.Key] = new [] { prop.Value };
             }
         }
-        // c.Properties ["RestoreSources"] = NUGETS_SOURCES;
+        // c.Properties ["RestoreSources"] = GetNuGetSources();
         var sep = IsRunningOnWindows() ? ";" : "%3B";
-        c.ArgumentCustomization = args => args.Append($"/p:RestoreSources=\"{string.Join(sep, NUGETS_SOURCES)}\"");
+        c.ArgumentCustomization = args => args.Append($"/p:RestoreSources=\"{string.Join(sep, GetNuGetSources())}\"");
     });
 }
diff --git a/nuget.config b/nuget.config
new file mode 100644
index 0000000000..e796bb2610
--- /dev/null
+++ b/nuget.config
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <clear />
+    <add key="dotnet-public" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json" />
+    <add key="dotnet6" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet6/nuget/v3/index.json" />
+    <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
+    <add key="darc-pub-dotnet-aspnetcore" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-aspnetcore-7c57ecbd-3/nuget/v3/index.json" />
+    <add key="darc-pub-dotnet-runtime" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-runtime-4822e3c3-5/nuget/v3/index.json" />
+    <add key="darc-pub-dotnet-windowsdesktop" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-windowsdesktop-59fea7da-4/nuget/v3/index.json" />
+    <add key="darc-pub-dotnet-emsdk" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-emsdk-1ec2e17f-4/nuget/v3/index.json" />
+  </packageSources>
+</configuration>