diff --git a/App.razor.cs b/App.razor.cs
index 055c043..00c2c51 100644
--- a/App.razor.cs
+++ b/App.razor.cs
@@ -15,7 +15,7 @@ public partial class App : ComponentBase
     {
         if (firstRender)
         {
-            var headerValue = await StorageService.GetItemAsync("Web_AM_Connect_Key");
+            var headerValue = await StorageService.GetItemAsync("Web-AM-Connect-Key");
 
             // 값 없으면 API 호출
             if (string.IsNullOrEmpty(headerValue))
@@ -30,7 +30,7 @@ public partial class App : ComponentBase
                     });
                 if (!string.IsNullOrEmpty(response.data.header))
                 {
-                    await StorageService.SetItemAsync("Web_AM_Connect_Key", response.data.header);
+                    await StorageService.SetItemAsync("Web-AM-Connect-Key", response.data.header);
                 }
             }
         }
diff --git a/Program/Services/UserStateService.cs b/Program/Services/UserStateService.cs
index e209bef..c9051c4 100644
--- a/Program/Services/UserStateService.cs
+++ b/Program/Services/UserStateService.cs
@@ -47,13 +47,13 @@ public class UserStateService(StorageService _storageService,SecureService _secu
     public async Task<(bool success, UserData? userData)> GetUserDataFromServerAsync()
     {
         
-        var headerValue = await _storageService.GetItemAsync("Web_AM_Connect_Key");
+        var headerValue = await _storageService.GetItemAsync("Web-AM-Connect-Key");
         if (string.IsNullOrEmpty(headerValue)) return (false, null);
         
         var args = new {
             url = "/api/v1/in/user",
             method = "GET",
-            headerKey = "Web_AM_Connect_Key",
+            headerKey = "Web-AM-Connect-Key",
             headerValue = headerValue,
             token = "VO00"
         };
diff --git a/Program/Views/Project/ConnectUser/Register.razor.cs b/Program/Views/Project/ConnectUser/Register.razor.cs
index 2d5c3b8..2ac26f6 100644
--- a/Program/Views/Project/ConnectUser/Register.razor.cs
+++ b/Program/Views/Project/ConnectUser/Register.razor.cs
@@ -40,7 +40,7 @@ public partial class Register : ComponentBase
         objRef = DotNetObjectReference.Create(this);
         try
         {
-            var token = await CookieService.GetItemAsync("Web_AM_Connect_Key");
+            var token = await CookieService.GetItemAsync("Web-AM-Connect-Key");
             if (string.IsNullOrEmpty(token))
             {
                 await JS.InvokeVoidAsync("alert", "인증 정보가 없습니다.");
@@ -50,7 +50,7 @@ public partial class Register : ComponentBase
 
             // AppController를 통해 세션에서 snsId 가져오기
             var request = new HttpRequestMessage(HttpMethod.Get, $"/api/v1/in/app/session/get?key=snsId");
-            request.Headers.Add("Web_AM_Connect_Key", token);
+            request.Headers.Add("Web-AM-Connect-Key", token);
 
             var response = await Http.SendAsync(request);
             if (response.IsSuccessStatusCode)
@@ -169,7 +169,7 @@ public partial class Register : ComponentBase
         try
         {
             LoadingService.ShowLoading();
-            var token = await CookieService.GetItemAsync("Web_AM_Connect_Key");
+            var token = await CookieService.GetItemAsync("Web-AM-Connect-Key");
             Console.WriteLine($"쿠키에서 가져온 토큰: '{token}'");
 
             if (string.IsNullOrEmpty(token))
@@ -182,7 +182,7 @@ public partial class Register : ComponentBase
             }
 
             var request = new HttpRequestMessage(HttpMethod.Post, "/api/v1/in/user/register");
-            request.Headers.Add("Web_AM_Connect_Key", token);
+            request.Headers.Add("Web-AM-Connect_Key", token);
             Console.WriteLine($"요청 헤더: {string.Join(", ", request.Headers.Select(h => $"{h.Key}: {string.Join(", ", h.Value)}"))}");
 
             request.Content = JsonContent.Create(registerData);
@@ -204,7 +204,7 @@ public partial class Register : ComponentBase
 
                     // 서버 세션에 토큰 저장
                     var sessionReq = new HttpRequestMessage(HttpMethod.Post, "/api/v1/in/app/session/set");
-                    sessionReq.Headers.Add("Web_AM_Connect_Key", token);
+                    sessionReq.Headers.Add("Web-AM-Connect-Key", token);
                     sessionReq.Content = JsonContent.Create(new[] {
                         new { key = "token", value = newToken },
                         new { key = "refresh", value = refresh }