diff --git a/src/corelib/io/qdir.cpp b/src/corelib/io/qdir.cpp
index 9ca512e..161d3a2 100644
--- a/src/corelib/io/qdir.cpp
+++ b/src/corelib/io/qdir.cpp
@@ -1554,7 +1554,10 @@ bool QDir::isReadable() const
 */
 bool QDir::exists() const
 {
-    return d_ptr->exists();
+    qDebug() << __FUNCTION__ << path() << "MIS" << d_ptr->metaData.missingFlags(QFileSystemMetaData::ExistsAttribute);
+    const bool d = d_ptr->exists();
+    qDebug() << __FUNCTION__ << path() << d << "MIS" << d_ptr->metaData.missingFlags(QFileSystemMetaData::ExistsAttribute);
+    return d;
 }
 
 /*!
diff --git a/src/corelib/io/qfilesystemengine_win.cpp b/src/corelib/io/qfilesystemengine_win.cpp
index 2c9ed9d..a78b41c 100644
--- a/src/corelib/io/qfilesystemengine_win.cpp
+++ b/src/corelib/io/qfilesystemengine_win.cpp
@@ -492,6 +492,7 @@ QFileSystemEntry QFileSystemEngine::getLinkTarget(const QFileSystemEntry &link,
 //static
 QFileSystemEntry QFileSystemEngine::canonicalName(const QFileSystemEntry &entry, QFileSystemMetaData &data)
 {
+    qDebug() << __FUNCTION__ << data.missingFlags(QFileSystemMetaData::ExistsAttribute);
     if (data.missingFlags(QFileSystemMetaData::ExistsAttribute))
        QFileSystemEngine::fillMetaData(entry, data, QFileSystemMetaData::ExistsAttribute);
 
@@ -934,6 +935,8 @@ bool QFileSystemEngine::fillMetaData(const QFileSystemEntry &entry, QFileSystemM
         // for all members used by fillFindData().
         bool ok = ::GetFileAttributesEx((wchar_t*)fname.nativeFilePath().utf16(), GetFileExInfoStandard,
                                         reinterpret_cast<WIN32_FILE_ATTRIBUTE_DATA *>(&findData));
+        if (!ok)
+            qErrnoWarning("GetFileAttributesEx failed on %s", qPrintable(fname.nativeFilePath()));
         if (ok) {
             data.fillFromFindData(findData, false, fname.isDriveRoot());
         } else {
diff --git a/src/corelib/io/qfilesystemmetadata_p.h b/src/corelib/io/qfilesystemmetadata_p.h
index 1abc9b7..e38cb90 100644
--- a/src/corelib/io/qfilesystemmetadata_p.h
+++ b/src/corelib/io/qfilesystemmetadata_p.h
@@ -56,6 +56,7 @@
 #include "qplatformdefs.h"
 #include <QtCore/qglobal.h>
 #include <QtCore/qdatetime.h>
+#include <QtCore/qdebug.h>
 #include <QtCore/private/qabstractfileengine_p.h>
 
 // Platform-specific includes
@@ -174,11 +175,13 @@ public:
 
     void clear()
     {
+        qDebug() << __FUNCTION__ ;
         knownFlagsMask = 0;
     }
 
     void clearFlags(MetaDataFlags flags = AllMetaDataFlags)
     {
+        qDebug() << __FUNCTION__ << flags;
         knownFlagsMask &= ~flags;
     }