diff --git a/Plain Craft Launcher 2/Modules/Minecraft/ModLaunch.vb b/Plain Craft Launcher 2/Modules/Minecraft/ModLaunch.vb
index 5b7b43fc7..d6635f400 100644
--- a/Plain Craft Launcher 2/Modules/Minecraft/ModLaunch.vb	
+++ b/Plain Craft Launcher 2/Modules/Minecraft/ModLaunch.vb	
@@ -808,6 +808,7 @@ LoginFinish:
             Data.Output.Uuid = SelectedId
             Data.Output.Type = Data.Input.Token
             '保存缓存
+            If LoginJson("selectedProfile") IsNot Nothing Then Setup.Set("CacheAuthDisallowChangePlayer", True)
             Setup.Set("Cache" & Data.Input.Token & "Access", Data.Output.AccessToken)
             Setup.Set("Cache" & Data.Input.Token & "Client", Data.Output.ClientToken)
             Setup.Set("Cache" & Data.Input.Token & "Uuid", Data.Output.Uuid)
diff --git a/Plain Craft Launcher 2/Pages/PageLaunch/PageLoginAuthSkin.xaml.vb b/Plain Craft Launcher 2/Pages/PageLaunch/PageLoginAuthSkin.xaml.vb
index 216c9ad6e..79bc36065 100644
--- a/Plain Craft Launcher 2/Pages/PageLaunch/PageLoginAuthSkin.xaml.vb	
+++ b/Plain Craft Launcher 2/Pages/PageLaunch/PageLoginAuthSkin.xaml.vb	
@@ -45,6 +45,10 @@
     End Sub
 
     Private Sub BtnEdit_Click(sender As Object, e As EventArgs) Handles BtnEdit.Click
+        If Setup.Get("CacheAuthDisallowChangePlayer") Then
+            MyMsgBox("当前档案不允许更换角色，请先退出当前档案，然后再更改角色。", "更换角色失败")
+            Exit Sub
+        End If
         If McLoginLoader.State = LoadState.Loading Then
             Log("[Launch] 要求更换角色，但登录加载器繁忙", LogLevel.Debug)
             If CType(McLoginLoader.Input, McLoginServer).ForceReselectProfile Then
@@ -70,6 +74,7 @@
         End Sub)
     End Sub
     Public Shared Sub ExitLogin() Handles BtnExit.Click
+        Setup.Reset("CacheAuthDisallowChangePlayer")
         Setup.Set("CacheAuthAccess", "")
         Setup.Set("CacheAuthUuid", "")
         Setup.Set("CacheAuthName", "")
diff --git a/Plain Craft Launcher 2/Pages/PageSetup/ModSetup.vb b/Plain Craft Launcher 2/Pages/PageSetup/ModSetup.vb
index 03776922f..8fa42c30a 100644
--- a/Plain Craft Launcher 2/Pages/PageSetup/ModSetup.vb	
+++ b/Plain Craft Launcher 2/Pages/PageSetup/ModSetup.vb	
@@ -63,6 +63,7 @@
         {"CacheNideUsername", New SetupEntry("", Source:=SetupSource.Registry, Encoded:=True)},
         {"CacheNidePass", New SetupEntry("", Source:=SetupSource.Registry, Encoded:=True)},
         {"CacheNideServer", New SetupEntry("", Source:=SetupSource.Registry, Encoded:=True)},
+        {"CacheAuthDisallowChangePlayer", New SetupEntry(False, Source:=SetupSource.Registry)},
         {"CacheAuthAccess", New SetupEntry("", Source:=SetupSource.Registry, Encoded:=True)},
         {"CacheAuthClient", New SetupEntry("", Source:=SetupSource.Registry, Encoded:=True)},
         {"CacheAuthUuid", New SetupEntry("", Source:=SetupSource.Registry, Encoded:=True)},