diff --git a/source/Reloaded.Mod.Launcher.Lib/Static/Resources.cs b/source/Reloaded.Mod.Launcher.Lib/Static/Resources.cs
index 9bf81232..fb849863 100644
--- a/source/Reloaded.Mod.Launcher.Lib/Static/Resources.cs
+++ b/source/Reloaded.Mod.Launcher.Lib/Static/Resources.cs
@@ -212,4 +212,6 @@ public static void Init(IDictionaryResourceProvider provider)
     // Update 1.28.6: Problematic Path Warnings
     public static IDictionaryResource<string> ProblematicPathTitle { get; set; }
     public static IDictionaryResource<string> ProblematicPathAppDescription { get; set; }
+    public static IDictionaryResource<string> ProblematicPathReloadedDescription { get; set; }
+    public static IDictionaryResource<string> ProblematicPathModsDescription { get; set; }
 }
\ No newline at end of file
diff --git a/source/Reloaded.Mod.Launcher/App.xaml.cs b/source/Reloaded.Mod.Launcher/App.xaml.cs
index c7062ed5..3478489d 100644
--- a/source/Reloaded.Mod.Launcher/App.xaml.cs
+++ b/source/Reloaded.Mod.Launcher/App.xaml.cs
@@ -39,13 +39,43 @@ private void OnStartup(object sender, StartupEventArgs e)
         StartProfileOptimization();
         PrepareWebRequests();
 
+        // Need to construct MainWindow before invoking any dialog, otherwise Shutdown will be called on closing the dialog
         var window = new MainWindow();
+
+        // Warn if OneDrive or NonAsciiChars detected in Reloaded-II directory
+        bool reloadedPathHasNonAsciiChars = AppContext.BaseDirectory.Any(c => c > 127);
+        if (AppContext.BaseDirectory.Contains("OneDrive") || reloadedPathHasNonAsciiChars)
+        {
+            Actions.DisplayMessagebox.Invoke(Lib.Static.Resources.ProblematicPathTitle.Get(), Lib.Static.Resources.ProblematicPathReloadedDescription.Get(), new Actions.DisplayMessageBoxParams()
+            {
+                StartupLocation = Actions.WindowStartupLocation.CenterScreen,
+                Type = Actions.MessageBoxType.Ok
+            });
+        }
+        else // We only do this check if the Reloaded-II directory check passed
+        {
+            // Warn if OneDrive or NonAsciiChars detected in Mods directory
+            var modsDirectory = Lib.IoC.Get<LoaderConfig>().GetModConfigDirectory();
+            if (modsDirectory != null)
+            {
+                bool modsDirectoryPathHasNonAsciiChars = modsDirectory.Any(c => c > 127);
+                if (modsDirectory.Contains("OneDrive") || modsDirectoryPathHasNonAsciiChars)
+                {
+                    Actions.DisplayMessagebox.Invoke(Lib.Static.Resources.ProblematicPathTitle.Get(), Lib.Static.Resources.ProblematicPathModsDescription.Get(), new Actions.DisplayMessageBoxParams()
+                    {
+                        StartupLocation = Actions.WindowStartupLocation.CenterScreen,
+                        Type = Actions.MessageBoxType.Ok
+                    });
+                }
+            }
+        }
+
         window.ShowDialog();
     }
 
     private void SetupResources()
     {
-        var launcherFolder= AppContext.BaseDirectory;
+        var launcherFolder = AppContext.BaseDirectory;
         var languageSelector = new XamlFileSelector($"{launcherFolder}\\Assets\\Languages");
         var themeSelector    = new XamlFileSelector($"{launcherFolder}\\Theme");
         
diff --git a/source/Reloaded.Mod.Launcher/Assets/Languages/en-GB.xaml b/source/Reloaded.Mod.Launcher/Assets/Languages/en-GB.xaml
index 9ce97518..d2dc9542 100644
--- a/source/Reloaded.Mod.Launcher/Assets/Languages/en-GB.xaml
+++ b/source/Reloaded.Mod.Launcher/Assets/Languages/en-GB.xaml
@@ -723,5 +723,7 @@ For more info, refer to the tutorial. Don't forget to set correct Publish target
     <!-- Update 1.28.6: Problematic Path Warnings -->
     <sys:String x:Key="ProblematicPathTitle">Potentially Problematic Path Detected</sys:String>
     <sys:String x:Key="ProblematicPathAppDescription">The application you selected is in a folder that is managed by OneDrive or contains non-ASCII (special) characters.&#x0a;It is recommended to move the application to a different path, such as "C:\Games\".&#x0a;Using the application in an unsupported path may result in mods not working.&#x0a;&#x0a;Press OK to add the application anyway.</sys:String>
+    <sys:String x:Key="ProblematicPathReloadedDescription">Reloaded-II has detected it is installed in a folder that is managed by OneDrive or contains non-ASCII (special) characters.&#x0a;It is recommended to move your Reloaded-II folder to a different path, such as "C:\Reloaded-II\".&#x0a;Keeping Reloaded-II in an unsupported path may result in mods not working.</sys:String>
+    <sys:String x:Key="ProblematicPathModsDescription">Reloaded-II has detected your mods folder is managed by OneDrive or contains non-ASCII (special) characters.&#x0a;It is recommended to move your mods folder to a different path.&#x0a;Keeping mods in an unsupported path may result in problems running mods.</sys:String>
 
 </ResourceDictionary>
\ No newline at end of file