fix: Windows DLL proper load

src/ansys/tools/installer/main.py

@@ -739,13 +739,29 @@ def _run_install_python(self, filename):
         self.setEnabled(True)
 
 
+def __restore_windows_dll_load():
+    """PyInstaller on Windows may break DLL loading. This function restores it."""
+    import sys
+    LOG.debug(f"sys.platform: {sys.platform}")
+    if sys.platform == "win32":
+        LOG.debug("Restoring DLL loading on Windows...")
+        import ctypes
+        ctypes.windll.kernel32.SetDllDirectoryA(None)
+
+
 def open_gui():
     """Start the installer as a QT Application."""
     import argparse
     import ctypes
+
+    # Enable logging early
+    enable_logging()
 
     if os.name == "nt":
         import msvcrt
+
+        # Restore DLL loading on Windows...
+        __restore_windows_dll_load()
 
         kernel32 = ctypes.windll.kernel32
 
@@ -776,8 +792,6 @@ def open_gui():
         sys.stdout = open("CONOUT$", "w")
         sys.stderr = open("CONOUT$", "w")
 
-    enable_logging()
-
     app = QtWidgets.QApplication(sys.argv)
     window = AnsysPythonInstaller()