diff --git a/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp b/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
index 3d4a03f7e9a..6efefff599a 100644
--- a/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
+++ b/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
@@ -271,31 +271,31 @@ HRESULT QWindowsUiaMainProvider::GetPatternProvider(PATTERNID idPattern, IUnknow
     switch (idPattern) {
     case UIA_WindowPatternId:
         if (accessible->parent() && (accessible->parent()->role() == QAccessible::Application)) {
-            *pRetVal = new QWindowsUiaWindowProvider(id());
+            *pRetVal = makeComObject<QWindowsUiaWindowProvider>(id()).Detach();
         }
         break;
     case UIA_TextPatternId:
     case UIA_TextPattern2Id:
         // All text controls.
         if (accessible->textInterface()) {
-            *pRetVal = new QWindowsUiaTextProvider(id());
+            *pRetVal = makeComObject<QWindowsUiaTextProvider>(id()).Detach();
         }
         break;
     case UIA_ValuePatternId:
         // All non-static controls support the Value pattern.
         if (accessible->role() != QAccessible::StaticText)
-            *pRetVal = new QWindowsUiaValueProvider(id());
+            *pRetVal = makeComObject<QWindowsUiaValueProvider>(id()).Detach();
         break;
     case UIA_RangeValuePatternId:
         // Controls providing a numeric value within a range (e.g., sliders, scroll bars, dials).
         if (accessible->valueInterface()) {
-            *pRetVal = new QWindowsUiaRangeValueProvider(id());
+            *pRetVal = makeComObject<QWindowsUiaRangeValueProvider>(id()).Detach();
         }
         break;
     case UIA_TogglePatternId:
         // Checkboxes and other checkable controls.
         if (accessible->state().checkable)
-            *pRetVal = new QWindowsUiaToggleProvider(id());
+            *pRetVal = makeComObject<QWindowsUiaToggleProvider>(id()).Detach();
         break;
     case UIA_SelectionPatternId:
     case UIA_SelectionPattern2Id:
@@ -303,7 +303,7 @@ HRESULT QWindowsUiaMainProvider::GetPatternProvider(PATTERNID idPattern, IUnknow
         if (accessible->selectionInterface()
                 || accessible->role() == QAccessible::List
                 || accessible->role() == QAccessible::PageTabList) {
-            *pRetVal = new QWindowsUiaSelectionProvider(id());
+            *pRetVal = makeComObject<QWindowsUiaSelectionProvider>(id()).Detach();
         }
         break;
     case UIA_SelectionItemPatternId:
@@ -312,41 +312,41 @@ HRESULT QWindowsUiaMainProvider::GetPatternProvider(PATTERNID idPattern, IUnknow
                 || (accessible->role() == QAccessible::RadioButton)
                 || (accessible->role() == QAccessible::ListItem)
                 || (accessible->role() == QAccessible::PageTab)) {
-            *pRetVal = new QWindowsUiaSelectionItemProvider(id());
+            *pRetVal = makeComObject<QWindowsUiaSelectionItemProvider>(id()).Detach();
         }
         break;
     case UIA_TablePatternId:
         // Table/tree.
         if (accessible->tableInterface()
                 && ((accessible->role() == QAccessible::Table) || (accessible->role() == QAccessible::Tree))) {
-            *pRetVal = new QWindowsUiaTableProvider(id());
+            *pRetVal = makeComObject<QWindowsUiaTableProvider>(id()).Detach();
         }
         break;
     case UIA_TableItemPatternId:
         // Item within a table/tree.
         if (accessible->tableCellInterface()
                 && ((accessible->role() == QAccessible::Cell) || (accessible->role() == QAccessible::TreeItem))) {
-            *pRetVal = new QWindowsUiaTableItemProvider(id());
+            *pRetVal = makeComObject<QWindowsUiaTableItemProvider>(id()).Detach();
         }
         break;
     case UIA_GridPatternId:
         // Table/tree.
         if (accessible->tableInterface()
                 && ((accessible->role() == QAccessible::Table) || (accessible->role() == QAccessible::Tree))) {
-            *pRetVal = new QWindowsUiaGridProvider(id());
+            *pRetVal = makeComObject<QWindowsUiaGridProvider>(id()).Detach();
         }
         break;
     case UIA_GridItemPatternId:
         // Item within a table/tree.
         if (accessible->tableCellInterface()
                 && ((accessible->role() == QAccessible::Cell) || (accessible->role() == QAccessible::TreeItem))) {
-            *pRetVal = new QWindowsUiaGridItemProvider(id());
+            *pRetVal = makeComObject<QWindowsUiaGridItemProvider>(id()).Detach();
         }
         break;
     case UIA_InvokePatternId:
         // Things that have an invokable action (e.g., simple buttons).
         if (accessible->actionInterface()) {
-            *pRetVal = new QWindowsUiaInvokeProvider(id());
+            *pRetVal = makeComObject<QWindowsUiaInvokeProvider>(id()).Detach();
         }
         break;
     case UIA_ExpandCollapsePatternId:
@@ -356,7 +356,7 @@ HRESULT QWindowsUiaMainProvider::GetPatternProvider(PATTERNID idPattern, IUnknow
                 && accessible->child(0)->role() == QAccessible::PopupMenu)
             || accessible->role() == QAccessible::ComboBox
             || (accessible->role() == QAccessible::TreeItem && accessible->state().expandable)) {
-            *pRetVal = new QWindowsUiaExpandCollapseProvider(id());
+            *pRetVal = makeComObject<QWindowsUiaExpandCollapseProvider>(id()).Detach();
         }
         break;
     default:
diff --git a/src/plugins/platforms/windows/uiautomation/qwindowsuiatextprovider.cpp b/src/plugins/platforms/windows/uiautomation/qwindowsuiatextprovider.cpp
index 172836232e1..00c2dfbd13e 100644
--- a/src/plugins/platforms/windows/uiautomation/qwindowsuiatextprovider.cpp
+++ b/src/plugins/platforms/windows/uiautomation/qwindowsuiatextprovider.cpp
@@ -11,7 +11,7 @@
 #include <QtGui/qaccessible.h>
 #include <QtCore/qloggingcategory.h>
 #include <QtCore/qstring.h>
-
+#include <QtCore/private/qcomptr_p.h>
 QT_BEGIN_NAMESPACE
 
 using namespace QWindowsUiAutomation;
@@ -50,9 +50,9 @@ HRESULT STDMETHODCALLTYPE QWindowsUiaTextProvider::GetSelection(SAFEARRAY **pRet
             for (LONG i = 0; i < selCount; ++i) {
                 int startOffset = 0, endOffset = 0;
                 textInterface->selection((int)i, &startOffset, &endOffset);
-                auto *textRangeProvider = new QWindowsUiaTextRangeProvider(id(), startOffset, endOffset);
-                SafeArrayPutElement(*pRetVal, &i, static_cast<IUnknown *>(textRangeProvider));
-                textRangeProvider->Release();
+                ComPtr<IUnknown> textRangeProvider =
+                        makeComObject<QWindowsUiaTextRangeProvider>(id(), startOffset, endOffset);
+                SafeArrayPutElement(*pRetVal, &i, textRangeProvider.Get());
             }
         }
     } else {
@@ -60,9 +60,9 @@ HRESULT STDMETHODCALLTYPE QWindowsUiaTextProvider::GetSelection(SAFEARRAY **pRet
         if ((*pRetVal = SafeArrayCreateVector(VT_UNKNOWN, 0, 1))) {
             LONG i = 0;
             int cursorPosition = textInterface->cursorPosition();
-            auto *textRangeProvider = new QWindowsUiaTextRangeProvider(id(), cursorPosition, cursorPosition);
-            SafeArrayPutElement(*pRetVal, &i, static_cast<IUnknown *>(textRangeProvider));
-            textRangeProvider->Release();
+            ComPtr<IUnknown> textRangeProvider = makeComObject<QWindowsUiaTextRangeProvider>(
+                    id(), cursorPosition, cursorPosition);
+            SafeArrayPutElement(*pRetVal, &i, textRangeProvider.Get());
         }
     }
     return S_OK;
@@ -88,9 +88,9 @@ HRESULT STDMETHODCALLTYPE QWindowsUiaTextProvider::GetVisibleRanges(SAFEARRAY **
     // Considering the entire text as visible.
     if ((*pRetVal = SafeArrayCreateVector(VT_UNKNOWN, 0, 1))) {
         LONG i = 0;
-        auto *textRangeProvider = new QWindowsUiaTextRangeProvider(id(), 0, textInterface->characterCount());
-        SafeArrayPutElement(*pRetVal, &i, static_cast<IUnknown *>(textRangeProvider));
-        textRangeProvider->Release();
+        ComPtr<IUnknown> textRangeProvider =
+                makeComObject<QWindowsUiaTextRangeProvider>(id(), 0, textInterface->characterCount());
+        SafeArrayPutElement(*pRetVal, &i, textRangeProvider.Get());
     }
     return S_OK;
 }
@@ -135,7 +135,7 @@ HRESULT STDMETHODCALLTYPE QWindowsUiaTextProvider::RangeFromPoint(UiaPoint point
     if (offset < 0 || offset >= textInterface->characterCount())
         return UIA_E_ELEMENTNOTAVAILABLE;
 
-    *pRetVal = new QWindowsUiaTextRangeProvider(id(), offset, offset);
+    *pRetVal = makeComObject<QWindowsUiaTextRangeProvider>(id(), offset, offset).Detach();
     return S_OK;
 }
 
@@ -156,7 +156,8 @@ HRESULT STDMETHODCALLTYPE QWindowsUiaTextProvider::get_DocumentRange(ITextRangeP
     if (!textInterface)
         return UIA_E_ELEMENTNOTAVAILABLE;
 
-    *pRetVal = new QWindowsUiaTextRangeProvider(id(), 0, textInterface->characterCount());
+    *pRetVal = makeComObject<QWindowsUiaTextRangeProvider>(id(), 0, textInterface->characterCount())
+                       .Detach();
     return S_OK;
 }
 
@@ -202,7 +203,8 @@ HRESULT STDMETHODCALLTYPE QWindowsUiaTextProvider::GetCaretRange(BOOL *isActive,
     *isActive = accessible->state().focused;
 
     int cursorPosition = textInterface->cursorPosition();
-    *pRetVal = new QWindowsUiaTextRangeProvider(id(), cursorPosition, cursorPosition);
+    *pRetVal = makeComObject<QWindowsUiaTextRangeProvider>(id(), cursorPosition, cursorPosition)
+                       .Detach();
     return S_OK;
 }
 
diff --git a/src/plugins/platforms/windows/uiautomation/qwindowsuiatextrangeprovider.cpp b/src/plugins/platforms/windows/uiautomation/qwindowsuiatextrangeprovider.cpp
index d837aac811c..a8d58e10105 100644
--- a/src/plugins/platforms/windows/uiautomation/qwindowsuiatextrangeprovider.cpp
+++ b/src/plugins/platforms/windows/uiautomation/qwindowsuiatextrangeprovider.cpp
@@ -45,7 +45,7 @@ HRESULT QWindowsUiaTextRangeProvider::Clone(ITextRangeProvider **pRetVal)
     if (!pRetVal)
         return E_INVALIDARG;
 
-    *pRetVal = new QWindowsUiaTextRangeProvider(id(), m_startOffset, m_endOffset);
+    *pRetVal = makeComObject<QWindowsUiaTextRangeProvider>(id(), m_startOffset, m_endOffset).Detach();
     return S_OK;
 }