diff --git a/src/libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.RemoteServer.cs b/src/libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.RemoteServer.cs
index 9b99ef1d13ff62..9fd29a905f97f2 100644
--- a/src/libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.RemoteServer.cs
+++ b/src/libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.RemoteServer.cs
@@ -607,7 +607,7 @@ public static IEnumerable<object[]> ExpectContinueVersion()
         [OuterLoop("Uses external servers", typeof(PlatformDetection), nameof(PlatformDetection.LocalEchoServerIsNotAvailable))]
         [Theory]
         [MemberData(nameof(ExpectContinueVersion))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/53876", TestPlatforms.Browser)]
+        [SkipOnPlatform(TestPlatforms.Browser, "ExpectContinue not supported on Browser")]
         public async Task PostAsync_ExpectContinue_Success(bool? expectContinue, Version version)
         {
             // Sync API supported only up to HTTP/1.1
diff --git a/src/libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.cs b/src/libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.cs
index 27a8fc9bed2477..17fcd64ee26d80 100644
--- a/src/libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.cs
+++ b/src/libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.cs
@@ -429,10 +429,10 @@ await LoopbackServerFactory.CreateClientAndServerAsync(async uri =>
                     if (PlatformDetection.IsNotBrowser)
                     {
                         request.Content.Headers.ContentMD5 = MD5.Create().ComputeHash(contentArray);
+                        request.Headers.Expect.Add(new NameValueWithParametersHeaderValue("100-continue"));
                     }
                     request.Content.Headers.ContentType = new MediaTypeHeaderValue("application/x-www-form-urlencoded");
                     request.Headers.Date = DateTimeOffset.Parse("Tue, 15 Nov 1994 08:12:31 GMT");
-                    request.Headers.Expect.Add(new NameValueWithParametersHeaderValue("100-continue"));
                     request.Headers.Add("Forwarded", "for=192.0.2.60;proto=http;by=203.0.113.43");
                     request.Headers.Add("From", "User Name <user@example.com>");
                     request.Headers.Host = "en.wikipedia.org:8080";
@@ -1369,7 +1369,7 @@ public async Task GetAsync_UnicodeHostName_SuccessStatusCodeInResponse()
 #region Post Methods Tests
 
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/53876", TestPlatforms.Browser)]
+        [SkipOnPlatform(TestPlatforms.Browser, "ExpectContinue not supported on Browser")]
         public async Task GetAsync_ExpectContinueTrue_NoContent_StillSendsHeader()
         {
             if (IsWinHttpHandler && UseVersion >= HttpVersion20.Value)
@@ -1547,6 +1547,7 @@ await server.AcceptConnectionAsync(async connection =>
         }
 
         [Fact]
+        [SkipOnPlatform(TestPlatforms.Browser, "ExpectContinue not supported on Browser")]
         public async Task SendAsync_MultipleExpected100Responses_ReceivesCorrectResponse()
         {
             if (IsWinHttpHandler && UseVersion >= HttpVersion20.Value)
@@ -1642,6 +1643,7 @@ await server.AcceptConnectionAsync(async connection =>
         }
 
         [Fact]
+        [SkipOnPlatform(TestPlatforms.Browser, "ExpectContinue not supported on Browser")]
         public async Task SendAsync_No100ContinueReceived_RequestBodySentEventually()
         {
             if (IsWinHttpHandler && UseVersion >= HttpVersion20.Value)