diff --git a/eng/Common.globalconfig b/eng/Common.globalconfig
index fd878420d57..4f5314ab69e 100644
--- a/eng/Common.globalconfig
+++ b/eng/Common.globalconfig
@@ -373,7 +373,7 @@ dotnet_diagnostic.CA2153.severity = none
 dotnet_diagnostic.CA2201.severity = none
 
 # Instantiate argument exceptions correctly
-dotnet_diagnostic.CA2208.severity = suggestion
+dotnet_diagnostic.CA2208.severity = warning
 
 # Non-constant fields should not be visible
 dotnet_diagnostic.CA2211.severity = none
diff --git a/src/Build.OM.UnitTests/TransientIO.cs b/src/Build.OM.UnitTests/TransientIO.cs
index 982474d02ea..efdf7a97cff 100644
--- a/src/Build.OM.UnitTests/TransientIO.cs
+++ b/src/Build.OM.UnitTests/TransientIO.cs
@@ -79,7 +79,7 @@ public string GetAbsolutePath(string relative)
             var absolute = Path.GetFullPath(Path.IsPathRooted(relative) ? relative : Path.Combine(tempRoot, relative));
             if (!IsControled(absolute))
             {
-                throw new ArgumentException(nameof(relative));
+                throw new ArgumentException("Either the path is invalid or it is not rooted to RootFolder.", nameof(relative));
             }
 
             return absolute;
diff --git a/src/StringTools/InternableString.Simple.cs b/src/StringTools/InternableString.Simple.cs
index 88126da5c6f..9ef590be148 100644
--- a/src/StringTools/InternableString.Simple.cs
+++ b/src/StringTools/InternableString.Simple.cs
@@ -20,7 +20,8 @@ public static string AsSpan<T>(this T[] array, int start, int length)
             {
                 return new string(charArray, start, length);
             }
-            throw new ArgumentException(nameof(array));
+
+            throw new ArgumentException("array is not char array.", nameof(array));
         }
     }
 }
diff --git a/src/Tasks/ManifestUtil/TrustInfo.cs b/src/Tasks/ManifestUtil/TrustInfo.cs
index 1652655417d..c8c501b5e8c 100644
--- a/src/Tasks/ManifestUtil/TrustInfo.cs
+++ b/src/Tasks/ManifestUtil/TrustInfo.cs
@@ -412,7 +412,7 @@ public bool IsFullTrust
         public PermissionSet PermissionSet
         {
             get => GetOutputPermissionSet();
-            set => _outputPermissionSet = value ?? throw new ArgumentNullException("PermissionSet cannot be set to null.");
+            set => _outputPermissionSet = value ?? throw new ArgumentNullException(nameof(value), "PermissionSet cannot be set to null.");
         }
 #endif