diff --git a/src/Ryujinx.HLE/HOS/Services/Am/AppletAE/AllSystemAppletProxiesService/LibraryAppletCreator/ILibraryAppletAccessor.cs b/src/Ryujinx.HLE/HOS/Services/Am/AppletAE/AllSystemAppletProxiesService/LibraryAppletCreator/ILibraryAppletAccessor.cs
index e1c0e5e62..cd71103ca 100644
--- a/src/Ryujinx.HLE/HOS/Services/Am/AppletAE/AllSystemAppletProxiesService/LibraryAppletCreator/ILibraryAppletAccessor.cs
+++ b/src/Ryujinx.HLE/HOS/Services/Am/AppletAE/AllSystemAppletProxiesService/LibraryAppletCreator/ILibraryAppletAccessor.cs
@@ -1,4 +1,5 @@
 using Ryujinx.Common.Logging;
+using Ryujinx.HLE.Exceptions;
 using Ryujinx.HLE.HOS.Applets;
 using Ryujinx.HLE.HOS.Ipc;
 using Ryujinx.HLE.HOS.Kernel;
@@ -119,12 +120,19 @@ namespace Ryujinx.HLE.HOS.Services.Am.AppletAE.AllSystemAppletProxiesService.Lib
         }
         
         [CommandCmif(90)]
-        // ILibraryAppletAccessor:90
+        // Unknown90(ulong[4])
         public ResultCode Unknown90(ServiceCtx context)
         {
             // NOTE: This call is performed on SDK 20+ when applet is called.
-            //       Since we don't support applets for now, it's fine to stub it.
-            
+            //       Since we don't support most applets for now, it's fine to stub it.
+            //       Throw if values are not 0 to learn more about what this function does.
+
+            if (context.RequestData.ReadUInt64() != 0 || context.RequestData.ReadUInt64() != 0 ||
+                context.RequestData.ReadUInt64() != 0 || context.RequestData.ReadUInt64() != 0)
+            {
+                throw new ServiceNotImplementedException(this, context, $"{GetType().FullName}: 90");
+            }
+
             Logger.Stub?.PrintStub(LogClass.ServiceAm);
             return ResultCode.Success;
         }
diff --git a/src/Ryujinx/Program.cs b/src/Ryujinx/Program.cs
index f0e0c2ec3..b5b5447db 100644
--- a/src/Ryujinx/Program.cs
+++ b/src/Ryujinx/Program.cs
@@ -24,11 +24,12 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Runtime.InteropServices;
+using System.Security.Principal;
 using System.Threading.Tasks;
 
 namespace Ryujinx.Ava
 {
-    internal partial class Program
+    internal static class Program
     {
         public static double WindowScaleFactor { get; set; }
         public static double DesktopScaleFactor { get; set; } = 1.0;
@@ -40,19 +41,36 @@ namespace Ryujinx.Ava
         public static bool UseHardwareAcceleration { get; private set; }
         public static string BackendThreadingArg { get; private set; }
 
-        [LibraryImport("user32.dll", SetLastError = true)]
-        public static partial int MessageBoxA(nint hWnd, [MarshalAs(UnmanagedType.LPStr)] string text, [MarshalAs(UnmanagedType.LPStr)] string caption, uint type);
-
         private const uint MbIconwarning = 0x30;
 
         public static int Main(string[] args)
         {
             Version = ReleaseInformation.Version;
-
-            if (OperatingSystem.IsWindows() && !OperatingSystem.IsWindowsVersionAtLeast(10, 0, 19041))
+            
+            if (OperatingSystem.IsWindows())
             {
-                _ = MessageBoxA(nint.Zero, "You are running an outdated version of Windows.\n\nRyujinx supports Windows 10 version 20H1 and newer.\n", $"Ryujinx {Version}", MbIconwarning);
-                return 0;
+                if (!OperatingSystem.IsWindowsVersionAtLeast(10, 0, 19041))
+                {
+                    _ = Win32NativeInterop.MessageBoxA(nint.Zero, "You are running an outdated version of Windows.\n\nRyujinx supports Windows 10 version 20H1 and newer.\n", $"Ryujinx {Version}", MbIconwarning);
+                    return 0;
+                }
+
+                if (Environment.CurrentDirectory.StartsWithIgnoreCase("C:\\Program Files") || 
+                    Environment.CurrentDirectory.StartsWithIgnoreCase("C:\\Program Files (x86)"))
+                {
+                    _ = Win32NativeInterop.MessageBoxA(nint.Zero, "Ryujinx is not intended to be run from the Program Files folder. Please move it out and relaunch.", $"Ryujinx {Version}", MbIconwarning);
+                    return 0;
+                }
+
+                // The names of everything here makes no sense for what this actually checks for. Thanks, Microsoft.
+                // If you can't tell by the error string,
+                // this actually checks if the current process was run with "Run as Administrator"
+                // ...but this reads like it checks if the current is in/has the Windows admin role? lol
+                if (new WindowsPrincipal(WindowsIdentity.GetCurrent()).IsInRole(WindowsBuiltInRole.Administrator))
+                {
+                    _ = Win32NativeInterop.MessageBoxA(nint.Zero, "Ryujinx is not intended to be run as administrator.", $"Ryujinx {Version}", MbIconwarning);
+                    return 0;
+                }
             }
 
             PreviewerDetached = true;
diff --git a/src/Ryujinx/UI/Helpers/Win32NativeInterop.cs b/src/Ryujinx/UI/Helpers/Win32NativeInterop.cs
index fc4193948..0ff7f5fde 100644
--- a/src/Ryujinx/UI/Helpers/Win32NativeInterop.cs
+++ b/src/Ryujinx/UI/Helpers/Win32NativeInterop.cs
@@ -112,5 +112,8 @@ namespace Ryujinx.Ava.UI.Helpers
 
         [LibraryImport("user32.dll", SetLastError = true)]
         public static partial ushort GetAsyncKeyState(int nVirtKey);
+        
+        [LibraryImport("user32.dll", SetLastError = true)]
+        public static partial int MessageBoxA(nint hWnd, [MarshalAs(UnmanagedType.LPStr)] string text, [MarshalAs(UnmanagedType.LPStr)] string caption, uint type);
     }
 }