diff --git a/dotnet/nuget.config b/dotnet/nuget.config
new file mode 100644
index 0000000000..996a924ac0
--- /dev/null
+++ b/dotnet/nuget.config
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <clear />
+    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />  
+  </packageSources>
+</configuration>
diff --git a/dotnet/src/Microsoft.Agents.Abstractions/Agent.cs b/dotnet/src/Microsoft.Agents.Abstractions/Agent.cs
index 7f2a17b23c..6fbd00add8 100644
--- a/dotnet/src/Microsoft.Agents.Abstractions/Agent.cs
+++ b/dotnet/src/Microsoft.Agents.Abstractions/Agent.cs
@@ -46,7 +46,7 @@ public abstract class Agent
     /// If an agent supports multiple thread types, this method should return the default thread
     /// type for the agent or whatever the agent was configured to use.
     /// </remarks>
-    public abstract AgentThread CreateThreadAsync();
+    public abstract Task<AgentThread> CreateThreadAsync();
 
     /// <summary>
     /// Run the agent with no message assuming that all required instructions are already provided to the agent or on the thread.
diff --git a/dotnet/tests/Microsoft.Agents.Abstractions.UnitTests/AgentTests.cs b/dotnet/tests/Microsoft.Agents.Abstractions.UnitTests/AgentTests.cs
index 5f51c5beb7..b0347c9491 100644
--- a/dotnet/tests/Microsoft.Agents.Abstractions.UnitTests/AgentTests.cs
+++ b/dotnet/tests/Microsoft.Agents.Abstractions.UnitTests/AgentTests.cs
@@ -259,7 +259,7 @@ public class AgentTests
                 cancellationToken);
         }
 
-        public override AgentThread CreateThreadAsync()
+        public override Task<AgentThread> CreateThreadAsync()
         {
             throw new System.NotImplementedException();
         }