diff --git a/test/OpenTelemetry.OpAmp.Client.Tests/WsTransportTest.cs b/test/OpenTelemetry.OpAmp.Client.Tests/WsTransportTest.cs
index e8aa1c5cf9..691093830a 100644
--- a/test/OpenTelemetry.OpAmp.Client.Tests/WsTransportTest.cs
+++ b/test/OpenTelemetry.OpAmp.Client.Tests/WsTransportTest.cs
@@ -245,7 +245,14 @@ public async Task WsTransport_DropsOversizedResponseWithoutDispatchingFrame()
 
         using var wsTransport = CreateTransport(opAmpServer.Endpoint, frameProcessor);
         await wsTransport.StartAsync(CancellationToken.None);
-        await wsTransport.SendAsync(FrameGenerator.GenerateMockAgentFrame().Frame, CancellationToken.None);
+
+        // SendAsync can race with the receiver aborting the socket after detecting the oversized response.
+        // On .NET Framework this may surface as a WebSocketException (Aborted state) or OperationCanceledException.
+        var sendException = await Record.ExceptionAsync(
+            () => wsTransport.SendAsync(FrameGenerator.GenerateMockAgentFrame().Frame, CancellationToken.None));
+        Assert.True(
+            sendException is null || sendException is WebSocketException || sendException is OperationCanceledException,
+            $"Unexpected exception from SendAsync: {sendException}");
 
         Assert.True(opAmpServer.TryGetClientCloseStatus(TimeSpan.FromSeconds(5), out var closeStatus));
         Assert.Equal(WebSocketCloseStatus.MessageTooBig, closeStatus);
@@ -313,7 +320,14 @@ public async Task WsTransport_LogsOversizedResponseWarning()
 
         using var wsTransport = CreateTransport(opAmpServer.Endpoint, new FrameProcessor());
         await wsTransport.StartAsync(CancellationToken.None);
-        await wsTransport.SendAsync(FrameGenerator.GenerateMockAgentFrame().Frame, CancellationToken.None);
+
+        // SendAsync can race with the receiver aborting the socket after detecting the oversized response.
+        // On .NET Framework this may surface as a WebSocketException (Aborted state) or OperationCanceledException.
+        var sendException = await Record.ExceptionAsync(
+            () => wsTransport.SendAsync(FrameGenerator.GenerateMockAgentFrame().Frame, CancellationToken.None));
+        Assert.True(
+            sendException is null || sendException is WebSocketException || sendException is OperationCanceledException,
+            $"Unexpected exception from SendAsync: {sendException}");
 
         Assert.True(opAmpServer.TryGetClientCloseStatus(TimeSpan.FromSeconds(5), out var closeStatus));
         Assert.Equal(WebSocketCloseStatus.MessageTooBig, closeStatus);