diff --git a/config.py b/config.py
index 45a2bf54..e2326b98 100644
--- a/config.py
+++ b/config.py
@@ -379,15 +379,6 @@ class Config:
             self._ENABLE_NOTICE_XSOVERLAY = value
             saveJson(self.PATH_CONFIG, inspect.currentframe().f_code.co_name, value)
 
-    @property
-    def ENABLE_OSC(self):
-        return self._ENABLE_OSC
-
-    @ENABLE_OSC.setter
-    def ENABLE_OSC(self, value):
-        if type(value) is bool:
-            self._ENABLE_OSC = value
-
     @property
     def ENABLE_SEND_MESSAGE_TO_VRC(self):
         return self._ENABLE_SEND_MESSAGE_TO_VRC
@@ -408,6 +399,15 @@ class Config:
             self._STARTUP_OSC_ENABLED_CHECK = value
             saveJson(self.PATH_CONFIG, inspect.currentframe().f_code.co_name, value)
 
+    @property
+    def IS_VALID_OSC(self):
+        return self._IS_VALID_OSC
+
+    @IS_VALID_OSC.setter
+    def IS_VALID_OSC(self, value):
+        if type(value) is bool:
+            self._IS_VALID_OSC = value
+
     @property
     def UPDATE_FLAG(self):
         return self._UPDATE_FLAG
@@ -526,9 +526,9 @@ class Config:
         self._MESSAGE_FORMAT = "[message]([translation])"
         self._ENABLE_AUTO_CLEAR_MESSAGE_BOX = True
         self._ENABLE_NOTICE_XSOVERLAY = False
-        self._ENABLE_OSC = False
         self._ENABLE_SEND_MESSAGE_TO_VRC = True
         self._STARTUP_OSC_ENABLED_CHECK = True
+        self._IS_VALID_OSC = False
         self._UPDATE_FLAG = False
         self._GITHUB_URL = "https://api.github.com/repos/misyaguziya/VRCT/releases/latest"
         # self._BREAK_KEYSYM_LIST = [
diff --git a/main.py b/main.py
index efba02c8..3ebab849 100644
--- a/main.py
+++ b/main.py
@@ -25,16 +25,13 @@ def sendMicMessage(message):
             translation = ""
 
         if config.ENABLE_TRANSCRIPTION_SEND is True:
-            if config.ENABLE_OSC is True:
+            if config.ENABLE_SEND_MESSAGE_TO_VRC is True:
                 if len(translation) > 0:
                     osc_message = config.MESSAGE_FORMAT.replace("[message]", message)
                     osc_message = osc_message.replace("[translation]", translation)
                 else:
                     osc_message = message
                 model.oscSendMessage(osc_message)
-            else:
-                if config.STARTUP_OSC_ENABLED_CHECK is True:
-                    view.printToTextbox_OSCError()
 
             view.printToTextbox_SentMessage(message, translation)
             if config.ENABLE_LOGGER is True:
@@ -124,16 +121,13 @@ def sendChatMessage(message):
             translation = ""
 
         # send OSC message
-        if config.ENABLE_OSC is True:
+        if config.ENABLE_SEND_MESSAGE_TO_VRC is True:
             if len(translation) > 0:
                 osc_message = config.MESSAGE_FORMAT.replace("[message]", message)
                 osc_message = osc_message.replace("[translation]", translation)
             else:
                 osc_message = message
             model.oscSendMessage(osc_message)
-        else:
-            if config.STARTUP_OSC_ENABLED_CHECK is True:
-                view.printToTextbox_OSCError()
 
         # update textbox message log
         view.printToTextbox_SentMessage(message, translation)
@@ -197,8 +191,8 @@ def callbackSelectedLanguagePresetTab(selected_tab_no):
 def callbackSetAuthKeys(keys):
     config.AUTH_KEYS = keys
 
-def callbackChangeStatusOSC(value):
-    config.ENABLE_OSC = value
+def callbackChangeStatusIsValidOSC(value):
+    config.IS_VALID_OSC = value
 
 def callbackChangeStatusSoftwareUpdated(value):
     config.UPDATE_FLAG = value
@@ -554,7 +548,11 @@ if model.authenticationTranslator(callbackSetAuthKeys) is False:
 model.addKeywords()
 
 # check OSC started
-model.checkOSCStarted(callbackChangeStatusOSC)
+if config.STARTUP_OSC_ENABLED_CHECK is True:
+    model.checkOSCStarted(callbackChangeStatusIsValidOSC)
+    sleep(2)
+    if config.IS_VALID_OSC is False:
+        view.printToTextbox_OSCError()
 
 # check Software Updated
 model.checkSoftwareUpdated(callbackChangeStatusSoftwareUpdated)
diff --git a/model.py b/model.py
index b6964143..7a1756e0 100644
--- a/model.py
+++ b/model.py
@@ -180,7 +180,7 @@ class Model:
     @staticmethod
     def checkOSCStarted(fnc):
         def checkOscReceive(address, osc_arguments):
-            if config.ENABLE_OSC is False:
+            if config.IS_VALID_OSC is False:
                 fnc(True)
 
         # start receive osc