# System.Resources

``` diff
 namespace System.Resources {
     [EditorBrowsableAttribute(EditorBrowsableState.Never)]
     public class MissingManifestResourceException : SystemException {
-        protected MissingManifestResourceException(SerializationInfo info, StreamingContext context);
+        [ObsoleteAttribute("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
+        protected MissingManifestResourceException(SerializationInfo info, StreamingContext context);
     }
     public class MissingSatelliteAssemblyException : SystemException {
-        protected MissingSatelliteAssemblyException(SerializationInfo info, StreamingContext context);
+        [EditorBrowsableAttribute(EditorBrowsableState.Never)]
+        [ObsoleteAttribute("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
+        protected MissingSatelliteAssemblyException(SerializationInfo info, StreamingContext context);
     }
 }
```

