diff --git a/src/libraries/Common/src/Interop/Windows/NtDll/Interop.NtStatus.cs b/src/libraries/Common/src/Interop/Windows/NtDll/Interop.NtStatus.cs
index 43508983609a5..ad48e8e74d52a 100644
--- a/src/libraries/Common/src/Interop/Windows/NtDll/Interop.NtStatus.cs
+++ b/src/libraries/Common/src/Interop/Windows/NtDll/Interop.NtStatus.cs
@@ -5,6 +5,10 @@ internal static partial class Interop
 {
     internal static class StatusOptions
     {
+        // See the NT_SUCCESS macro in the Windows SDK, and
+        // https://learn.microsoft.com/en-us/windows-hardware/drivers/kernel/using-ntstatus-values
+        internal static bool NT_SUCCESS(uint ntStatus) => (int)ntStatus >= 0;
+
         // Error codes from ntstatus.h
         internal const uint STATUS_SUCCESS                = 0x00000000;
         internal const uint STATUS_SOME_NOT_MAPPED        = 0x00000107;
diff --git a/src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.IO.Windows.cs b/src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.IO.Windows.cs
index 2d1a37ca13108..fdf37dcd20a08 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.IO.Windows.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.IO.Windows.cs
@@ -257,7 +257,7 @@ public static void Invoke(Event e)
                     // The NtStatus code for the operation is in the InternalLow field
                     uint ntStatus = (uint)(nint)e.nativeOverlapped->InternalLow;
                     uint errorCode = Interop.Errors.ERROR_SUCCESS;
-                    if (ntStatus != Interop.StatusOptions.STATUS_SUCCESS)
+                    if (!Interop.StatusOptions.NT_SUCCESS(ntStatus))
                     {
                         errorCode = Interop.NtDll.RtlNtStatusToDosError((int)ntStatus);
                     }