diff --git a/common/core/inc/ux_api.h b/common/core/inc/ux_api.h
index 6689eb02..1c95a0de 100644
--- a/common/core/inc/ux_api.h
+++ b/common/core/inc/ux_api.h
@@ -1,10 +1,10 @@
 /***************************************************************************
- * Copyright (c) 2024 Microsoft Corporation 
- * 
+ * Copyright (c) 2024 Microsoft Corporation
+ *
  * This program and the accompanying materials are made available under the
  * terms of the MIT License which is available at
  * https://opensource.org/licenses/MIT.
- * 
+ *
  * SPDX-License-Identifier: MIT
  **************************************************************************/
 
@@ -2838,6 +2838,7 @@ typedef struct UX_HOST_CLASS_DPUMP_STRUCT
 #define ux_device_stack_interface_start                         _ux_device_stack_interface_start
 #define ux_device_stack_transfer_request                        _ux_device_stack_transfer_request
 #define ux_device_stack_transfer_abort                          _ux_device_stack_transfer_abort
+#define ux_device_stack_microsoft_extension_register            _ux_device_stack_microsoft_extension_register
 
 #define ux_device_stack_tasks_run                               _ux_device_stack_tasks_run
 #define ux_device_stack_transfer_run                            _ux_device_stack_transfer_run
@@ -2938,6 +2939,8 @@ UINT    ux_device_stack_interface_set(UCHAR * device_framework, ULONG device_fra
 UINT    ux_device_stack_interface_start(UX_SLAVE_INTERFACE *ux_interface);
 UINT    ux_device_stack_transfer_request(UX_SLAVE_TRANSFER *transfer_request, ULONG slave_length, ULONG host_length);
 UINT    ux_device_stack_transfer_request_abort(UX_SLAVE_TRANSFER *transfer_request, ULONG completion_code);
+UINT    ux_device_stack_microsoft_extension_register(ULONG vendor_request,
+                                    UINT (*vendor_request_function)(ULONG, ULONG, ULONG, ULONG, UCHAR *, ULONG *));
 
 UINT    ux_device_stack_tasks_run(VOID);
 UINT    ux_device_stack_transfer_run(UX_SLAVE_TRANSFER *transfer_request, ULONG slave_length, ULONG host_length);
diff --git a/common/core/src/ux_device_stack_microsoft_extension_register.c b/common/core/src/ux_device_stack_microsoft_extension_register.c
index c078e199..4a3ad240 100644
--- a/common/core/src/ux_device_stack_microsoft_extension_register.c
+++ b/common/core/src/ux_device_stack_microsoft_extension_register.c
@@ -1,18 +1,18 @@
 /***************************************************************************
- * Copyright (c) 2024 Microsoft Corporation 
- * 
+ * Copyright (c) 2024 Microsoft Corporation
+ *
  * This program and the accompanying materials are made available under the
  * terms of the MIT License which is available at
  * https://opensource.org/licenses/MIT.
- * 
+ *
  * SPDX-License-Identifier: MIT
  **************************************************************************/
 
 
 /**************************************************************************/
 /**************************************************************************/
-/**                                                                       */ 
-/** USBX Component                                                        */ 
+/**                                                                       */
+/** USBX Component                                                        */
 /**                                                                       */
 /**   Device Stack                                                        */
 /**                                                                       */
@@ -45,31 +45,31 @@
 /*                                                                        */
 /*  INPUT                                                                 */
 /*                                                                        */
-/*    vendor_command                        Vendor Command.               */ 
-/*    application_callback                  Application Callback          */ 
+/*    vendor_command                        Vendor Command.               */
+/*    application_callback                  Application Callback          */
 /*                                                                        */
 /*  OUTPUT                                                                */
 /*                                                                        */
-/*    Completion Status                                                   */ 
+/*    Completion Status                                                   */
+/*                                                                        */
+/*  CALLS                                                                 */
 /*                                                                        */
-/*  CALLS                                                                 */ 
-/*                                                                        */ 
 /*    None                                                                */
-/*                                                                        */ 
-/*  CALLED BY                                                             */ 
-/*                                                                        */ 
-/*    Application                                                         */ 
-/*                                                                        */ 
-/*  RELEASE HISTORY                                                       */ 
-/*                                                                        */ 
-/*    DATE              NAME                      DESCRIPTION             */ 
-/*                                                                        */ 
+/*                                                                        */
+/*  CALLED BY                                                             */
+/*                                                                        */
+/*    Application                                                         */
+/*                                                                        */
+/*  RELEASE HISTORY                                                       */
+/*                                                                        */
+/*    DATE              NAME                      DESCRIPTION             */
+/*                                                                        */
 /*  05-19-2020     Chaoqiong Xiao           Initial Version 6.0           */
 /*  09-30-2020     Chaoqiong Xiao           Modified comment(s),          */
 /*                                            resulting in version 6.1    */
 /*                                                                        */
 /**************************************************************************/
-UINT  _ux_device_stack_microsoft_extension_register(ULONG vendor_request, 
+UINT  _ux_device_stack_microsoft_extension_register(ULONG vendor_request,
                                   UINT (*vendor_request_function)(ULONG, ULONG, ULONG, ULONG, UCHAR *, ULONG *))
 {
 
@@ -79,7 +79,7 @@ UINT  _ux_device_stack_microsoft_extension_register(ULONG vendor_request,
 
     /* Store the vendor command.  */
     _ux_system_slave -> ux_system_slave_device_vendor_request           = vendor_request;
-    _ux_system_slave -> ux_system_slave_device_vendor_request_function  = vendor_request_function;     
+    _ux_system_slave -> ux_system_slave_device_vendor_request_function  = vendor_request_function;
 
     /* Return successful completion.  */
     return(UX_SUCCESS);
diff --git a/test/regression/usbx_msrc_66679_test.c b/test/regression/usbx_msrc_66679_test.c
index c31a6aa8..4664b26b 100644
--- a/test/regression/usbx_msrc_66679_test.c
+++ b/test/regression/usbx_msrc_66679_test.c
@@ -743,7 +743,7 @@ CHAR *                  memory_pointer;
     }
 
     /* MS extensions.  */
-    status = _ux_device_stack_microsoft_extension_register(UX_DEMO_VENDOR_REQUEST, test_ms_vendor_request);
+    status = ux_device_stack_microsoft_extension_register(UX_DEMO_VENDOR_REQUEST, test_ms_vendor_request);
 
     if(status!=UX_SUCCESS)
     {
diff --git a/test/regression/usbx_msrc_72227_host_pima_read_test.c b/test/regression/usbx_msrc_72227_host_pima_read_test.c
index e4e46161..8b783f5a 100644
--- a/test/regression/usbx_msrc_72227_host_pima_read_test.c
+++ b/test/regression/usbx_msrc_72227_host_pima_read_test.c
@@ -874,7 +874,7 @@ ULONG                   test_n;
     }
 
     /* MTP requires MTP extensions.  */
-    status = _ux_device_stack_microsoft_extension_register(UX_TEST_VENDOR_REQUEST, pima_device_vendor_request);
+    status = ux_device_stack_microsoft_extension_register(UX_TEST_VENDOR_REQUEST, pima_device_vendor_request);
     if (status != UX_SUCCESS)
     {
         printf("ERROR #%d\n", __LINE__);
diff --git a/test/regression/usbx_msrc_72525_host_pima_obj_handles_get_test.c b/test/regression/usbx_msrc_72525_host_pima_obj_handles_get_test.c
index 36279dd6..8625d242 100644
--- a/test/regression/usbx_msrc_72525_host_pima_obj_handles_get_test.c
+++ b/test/regression/usbx_msrc_72525_host_pima_obj_handles_get_test.c
@@ -874,7 +874,7 @@ ULONG                   test_n;
     }
 
     /* MTP requires MTP extensions.  */
-    status = _ux_device_stack_microsoft_extension_register(UX_TEST_VENDOR_REQUEST, pima_device_vendor_request);
+    status = ux_device_stack_microsoft_extension_register(UX_TEST_VENDOR_REQUEST, pima_device_vendor_request);
     if (status != UX_SUCCESS)
     {
         printf("ERROR #%d\n", __LINE__);
diff --git a/test/regression/usbx_msrc_72619_host_pima_stor_ids_get_test.c b/test/regression/usbx_msrc_72619_host_pima_stor_ids_get_test.c
index 21cb2295..0e339ce1 100644
--- a/test/regression/usbx_msrc_72619_host_pima_stor_ids_get_test.c
+++ b/test/regression/usbx_msrc_72619_host_pima_stor_ids_get_test.c
@@ -874,7 +874,7 @@ ULONG                   test_n;
     }
 
     /* MTP requires MTP extensions.  */
-    status = _ux_device_stack_microsoft_extension_register(UX_TEST_VENDOR_REQUEST, pima_device_vendor_request);
+    status = ux_device_stack_microsoft_extension_register(UX_TEST_VENDOR_REQUEST, pima_device_vendor_request);
     if (status != UX_SUCCESS)
     {
         printf("ERROR #%d\n", __LINE__);
diff --git a/test/regression/usbx_msrc_81292_host_pima_deactivate_semaphore_test.c b/test/regression/usbx_msrc_81292_host_pima_deactivate_semaphore_test.c
index cbe72426..e31607e9 100644
--- a/test/regression/usbx_msrc_81292_host_pima_deactivate_semaphore_test.c
+++ b/test/regression/usbx_msrc_81292_host_pima_deactivate_semaphore_test.c
@@ -874,7 +874,7 @@ ULONG                   test_n;
     }
 
     /* MTP requires MTP extensions.  */
-    status = _ux_device_stack_microsoft_extension_register(UX_TEST_VENDOR_REQUEST, pima_device_vendor_request);
+    status = ux_device_stack_microsoft_extension_register(UX_TEST_VENDOR_REQUEST, pima_device_vendor_request);
     if (status != UX_SUCCESS)
     {
         printf("ERROR #%d\n", __LINE__);
diff --git a/test/regression/usbx_msrc_81323_host_pima_deactivate_no_int_ep_test.c b/test/regression/usbx_msrc_81323_host_pima_deactivate_no_int_ep_test.c
index 882f9616..fbec683a 100644
--- a/test/regression/usbx_msrc_81323_host_pima_deactivate_no_int_ep_test.c
+++ b/test/regression/usbx_msrc_81323_host_pima_deactivate_no_int_ep_test.c
@@ -868,7 +868,7 @@ ULONG                   test_n;
     }
 
     /* MTP requires MTP extensions.  */
-    status = _ux_device_stack_microsoft_extension_register(UX_TEST_VENDOR_REQUEST, pima_device_vendor_request);
+    status = ux_device_stack_microsoft_extension_register(UX_TEST_VENDOR_REQUEST, pima_device_vendor_request);
     if (status != UX_SUCCESS)
     {
         printf("ERROR #%d\n", __LINE__);
diff --git a/test/regression/usbx_msrc_84686_host_pima_storage_info_get_test.c b/test/regression/usbx_msrc_84686_host_pima_storage_info_get_test.c
index 1a2909da..2b90a9de 100644
--- a/test/regression/usbx_msrc_84686_host_pima_storage_info_get_test.c
+++ b/test/regression/usbx_msrc_84686_host_pima_storage_info_get_test.c
@@ -875,7 +875,7 @@ ULONG                   test_n;
     }
 
     /* MTP requires MTP extensions.  */
-    status = _ux_device_stack_microsoft_extension_register(UX_TEST_VENDOR_REQUEST, pima_device_vendor_request);
+    status = ux_device_stack_microsoft_extension_register(UX_TEST_VENDOR_REQUEST, pima_device_vendor_request);
     if (status != UX_SUCCESS)
     {
         printf("ERROR #%d\n", __LINE__);
diff --git a/test/regression/usbx_pima_basic_test.c b/test/regression/usbx_pima_basic_test.c
index 8932004e..0ea99120 100644
--- a/test/regression/usbx_pima_basic_test.c
+++ b/test/regression/usbx_pima_basic_test.c
@@ -874,7 +874,7 @@ ULONG                   test_n;
     }
 
     /* MTP requires MTP extensions.  */
-    status = _ux_device_stack_microsoft_extension_register(UX_TEST_VENDOR_REQUEST, pima_device_vendor_request);
+    status = ux_device_stack_microsoft_extension_register(UX_TEST_VENDOR_REQUEST, pima_device_vendor_request);
     if (status != UX_SUCCESS)
     {
         printf("ERROR #%d\n", __LINE__);