diff --git a/build.psm1 b/build.psm1
index 79bcccc6ce..5a9aa3f189 100644
--- a/build.psm1
+++ b/build.psm1
@@ -390,11 +390,10 @@ Fix steps:
     }
 
     try {
+        # Relative paths do not work well if cwd is not changed to project
+        Push-Location $Options.Top
 
         if ($Options.Runtime -notlike 'fxdependent*') {
-            # Relative paths do not work well if cwd is not changed to project
-            Push-Location $Options.Top
-
             if ($Options.Runtime -like 'win-arm*') {
                 $Arguments += "/property:SDKToUse=Microsoft.NET.Sdk"
             } else {
@@ -410,7 +409,6 @@ Fix steps:
                 Start-CrossGen -PublishPath $publishPath -Runtime $script:Options.Runtime
                 Write-Log "pwsh.exe with ngen binaries is available at: $($Options.Output)"
             }
-
         } else {
             $globalToolSrcFolder = Resolve-Path (Join-Path $Options.Top "../Microsoft.PowerShell.GlobalTool.Shim") | Select-Object -ExpandProperty Path
 
@@ -420,8 +418,6 @@ Fix steps:
                 $Arguments += "/property:SDKToUse=Microsoft.NET.Sdk.WindowsDesktop"
             }
 
-            # Relative paths do not work well if cwd is not changed to project
-            Push-Location $Options.Top
             Write-Log "Run dotnet $Arguments from $pwd"
             Start-NativeExecution { dotnet $Arguments }
             Write-Log "PowerShell output: $($Options.Output)"
@@ -440,6 +436,11 @@ Fix steps:
         Pop-Location
     }
 
+    # No extra post-building task will run if '-SMAOnly' is specified, because its purpose is for a quick update of S.M.A.dll after full build.
+    if ($SMAOnly) {
+        return
+    }
+
     # publish reference assemblies
     try {
         Push-Location "$PSScriptRoot/src/TypeCatalogGen"
diff --git a/test/xUnit/csharp/test_SecuritySupport.cs b/test/xUnit/csharp/test_SecuritySupport.cs
index 6090b0d1ee..0d7cbbc8f0 100644
--- a/test/xUnit/csharp/test_SecuritySupport.cs
+++ b/test/xUnit/csharp/test_SecuritySupport.cs
@@ -12,19 +12,14 @@ namespace PSTests.Parallel
         [Fact]
         public static void TestScanContent()
         {
-            Assert.Equal(AmsiUtils.AmsiNativeMethods.AMSI_RESULT.AMSI_RESULT_NOT_DETECTED, AmsiUtils.ScanContent(string.Empty, string.Empty));
-        }
-
-        [Fact]
-        public static void TestCloseSession()
-        {
-            AmsiUtils.CloseSession();
-        }
-
-        [Fact]
-        public static void TestUninitialize()
-        {
-            AmsiUtils.Uninitialize();
+            try
+            {
+                Assert.Equal(AmsiUtils.AmsiNativeMethods.AMSI_RESULT.AMSI_RESULT_NOT_DETECTED, AmsiUtils.ScanContent(string.Empty, string.Empty));
+            }
+            finally
+            {
+                AmsiUtils.Uninitialize();
+            }
         }
     }
 }