diff --git a/src/ProjectTemplates/test/Templates.Blazor.Tests/playwrightSettings.container.json b/src/ProjectTemplates/test/Templates.Blazor.Tests/playwrightSettings.container.json
new file mode 100644
index 000000000000..9cac360ea5a2
--- /dev/null
+++ b/src/ProjectTemplates/test/Templates.Blazor.Tests/playwrightSettings.container.json
@@ -0,0 +1,5 @@
+{
+  "GlobalBrowserOptions": {
+    "ChromiumSandbox": false
+  }
+}
diff --git a/src/Servers/IIS/IIS/test/Common.FunctionalTests/Infrastructure/SkipIfNotAdminAttribute.cs b/src/Servers/IIS/IIS/test/Common.FunctionalTests/Infrastructure/SkipIfNotAdminAttribute.cs
index 189a0efd0d46..8721e39eacbe 100644
--- a/src/Servers/IIS/IIS/test/Common.FunctionalTests/Infrastructure/SkipIfNotAdminAttribute.cs
+++ b/src/Servers/IIS/IIS/test/Common.FunctionalTests/Infrastructure/SkipIfNotAdminAttribute.cs
@@ -14,6 +14,11 @@ public bool IsMet
     {
         get
         {
+            if (!OperatingSystem.IsWindows())
+            {
+                return false;
+            }
+
             var identity = WindowsIdentity.GetCurrent();
             var principal = new WindowsPrincipal(identity);
             return principal.IsInRole(WindowsBuiltInRole.Administrator) || SkipInVSTSAttribute.RunningInVSTS;
diff --git a/src/Shared/BrowserTesting/src/BrowserTestBase.cs b/src/Shared/BrowserTesting/src/BrowserTestBase.cs
index 6b6fc394dd71..6d571093cc77 100644
--- a/src/Shared/BrowserTesting/src/BrowserTestBase.cs
+++ b/src/Shared/BrowserTesting/src/BrowserTestBase.cs
@@ -21,6 +21,9 @@ public class BrowserTestBase : LoggedTest, IAsyncLifetime
         !string.IsNullOrWhiteSpace(Environment.GetEnvironmentVariable("ContinuousIntegrationBuild")) ||
         !string.IsNullOrWhiteSpace(Environment.GetEnvironmentVariable("Helix"));
 
+    private static readonly bool _isContainerEnvironment =
+        File.Exists("/.dockerenv") || File.Exists("/run/.containerenv");
+
     private static readonly BrowserManagerConfiguration _config = new BrowserManagerConfiguration(CreateConfiguration());
 
     public BrowserTestBase(ITestOutputHelper output = null) : base(output) { }
@@ -55,6 +58,11 @@ private static IConfiguration CreateConfiguration()
                 .AddJsonFile(Path.Combine(basePath, $"playwrightSettings.ci.{os}.json"), optional: true);
         }
 
+        if (_isContainerEnvironment)
+        {
+            builder.AddJsonFile(Path.Combine(basePath, "playwrightSettings.container.json"), optional: true);
+        }
+
         if (Debugger.IsAttached)
         {
             builder.AddJsonFile(Path.Combine(basePath, "playwrightSettings.debug.json"), optional: true);
diff --git a/src/Shared/E2ETesting/BrowserFixture.cs b/src/Shared/E2ETesting/BrowserFixture.cs
index 861281ad1cd2..86af6f2acfe5 100644
--- a/src/Shared/E2ETesting/BrowserFixture.cs
+++ b/src/Shared/E2ETesting/BrowserFixture.cs
@@ -168,6 +168,7 @@ private async Task DeleteBrowserUserProfileDirectoriesAsync()
 
         opts.AddArgument("--no-sandbox");
         opts.AddArgument("--ignore-certificate-errors");
+        opts.AddArgument("--disable-dev-shm-usage");
 
         // Log errors
         opts.SetLoggingPreference(LogType.Browser, LogLevel.All);
diff --git a/src/SignalR/server/SignalR/test/Microsoft.AspNetCore.SignalR.TrimmingTests/TestTypedClients.cs b/src/SignalR/server/SignalR/test/Microsoft.AspNetCore.SignalR.TrimmingTests/TestTypedClients.cs
index 41d3a8aea858..b7d96421da2a 100644
--- a/src/SignalR/server/SignalR/test/Microsoft.AspNetCore.SignalR.TrimmingTests/TestTypedClients.cs
+++ b/src/SignalR/server/SignalR/test/Microsoft.AspNetCore.SignalR.TrimmingTests/TestTypedClients.cs
@@ -25,6 +25,11 @@
 
 // connect a client and ensure we can invoke a method on the server
 var serverUrl = app.Services.GetRequiredService<IServer>().Features.Get<IServerAddressesFeature>().Addresses.First();
+
+// replace IPv6Any/IPv4Any with localhost so that it's a valid address for the client connection
+serverUrl = serverUrl.Replace("[::]", "localhost");
+serverUrl = serverUrl.Replace("0.0.0.0", "localhost");
+
 var hubConnectionBuilder = new HubConnectionBuilder()
     .WithUrl(serverUrl + "/testhub");
 AppJsonSerializerContext.AddToJsonHubProtocol(hubConnectionBuilder.Services);
diff --git a/src/Testing/src/HelixHelper.cs b/src/Testing/src/HelixHelper.cs
index eb40e10daea7..6ab8cd4557c8 100644
--- a/src/Testing/src/HelixHelper.cs
+++ b/src/Testing/src/HelixHelper.cs
@@ -10,7 +10,7 @@ public static class HelixHelper
 {
     public static bool OnHelix() => !string.IsNullOrEmpty(GetTargetHelixQueue());
 
-    public static string GetTargetHelixQueue() => Environment.GetEnvironmentVariable("helix");
+    public static string GetTargetHelixQueue() => Environment.GetEnvironmentVariable("helix") ?? "";
 
     // Uploads the file on helix, or puts the file in your user temp folder when running locally
     public static void PreserveFile(string filePath, string uploadFileName)