diff --git a/TAO/NEWS b/TAO/NEWS
index 90fb05dd2dc98..88849b71b645a 100644
--- a/TAO/NEWS
+++ b/TAO/NEWS
@@ -7,6 +7,8 @@ USER VISIBLE CHANGES BETWEEN TAO-4.0.3 and TAO-4.0.4
       builtin backend doesn't enforce the bound
     . Support for using maps in unions, sequences, and arrays
     . Fix memory leaks caused by maps
+  . Removed support for deprecated CPP_LOCATION and TAO_IDL_DEFAULT_CPP_FLAGS
+    environment variables
 
 USER VISIBLE CHANGES BETWEEN TAO-4.0.2 and TAO-4.0.3
 ====================================================
diff --git a/TAO/TAO_IDL/fe/fe_init.cpp b/TAO/TAO_IDL/fe/fe_init.cpp
index dd8e162edbd7f..e0bca2175b65e 100644
--- a/TAO/TAO_IDL/fe/fe_init.cpp
+++ b/TAO/TAO_IDL/fe/fe_init.cpp
@@ -502,24 +502,7 @@ FE_get_cpp_loc_from_env ()
     }
   else
     {
-      // Check for the deprecated CPP_LOCATION environment variable
-      ACE_Env_Value<char*> cpp_path (ACE_TEXT ("CPP_LOCATION"),
-                                     (char *) nullptr);
-
-      if (cpp_path != 0)
-        {
-          ACE_ERROR ((LM_WARNING,
-                      "WARNING: The environment variable "
-                      "CPP_LOCATION has been deprecated.\n"
-                      "         Please use TAO_IDL_PREPROCESSOR "
-                      "instead.\n"));
-
-          cpp_loc = cpp_path;
-        }
-      else
-        {
-          cpp_loc = idl_global->cpp_location ();
-        }
+      cpp_loc = idl_global->cpp_location ();
     }
 
   return cpp_loc;
@@ -538,25 +521,6 @@ FE_get_cpp_args_from_env ()
     {
       cpp_args = args1;
     }
-  else
-    {
-      // Check for the deprecated TAO_IDL_DEFAULT_CPP_FLAGS environment
-      // variable.
-      ACE_Env_Value<char*> args2 (ACE_TEXT ("TAO_IDL_DEFAULT_CPP_FLAGS"),
-                                  (char *) nullptr);
-
-      if (args2 != 0)
-        {
-          ACE_ERROR ((LM_WARNING,
-                      "Warning: The environment variable "
-                      "TAO_IDL_DEFAULT_CPP_FLAGS has been "
-                      "deprecated.\n"
-                      "         Please use "
-                      "TAO_IDL_PREPROCESSOR_ARGS instead.\n"));
-
-          cpp_args = args2;
-        }
-    }
 
   return cpp_args;
 }
diff --git a/TAO/docs/compiler.html b/TAO/docs/compiler.html
index eaa53ba1a27d1..6ca6270989d04 100644
--- a/TAO/docs/compiler.html
+++ b/TAO/docs/compiler.html
@@ -157,12 +157,6 @@ <h3>Generated Files</h3>
 by setting the environment variables TAO_IDL_PREPROCESSOR and
 TAO_IDL_PREPROCESSOR_ARGS.</P>
 
-<P>In previous versions, the environment variables CPP_LOCATION and
-TAO_IDL_DEFAULT_CPP_FLAGS were used for this purpose.  Both will still work,
-but TAO_IDL will display a deprecation warning if it detects one of these.
-It is possible that support for these old variables will be removed in a
-future version of TAO.</P>
-
 <P>If ACE_ROOT or TAO_ROOT are defined, then TAO_IDL
 will use them to include the $(ACE_ROOT)/TAO/tao or $(TAO_ROOT)/tao
 directories. This is to allow TAO_IDL to automatically find