2 files changed, 4 insertions, 0 deletions
diff --git a/src/corelib/io/qfilesystemengine_win.cpp b/src/corelib/io/qfilesystemengine_win.cpp
index e55ab0b544..257bd4a50e 100644
--- a/src/corelib/io/qfilesystemengine_win.cpp
+++ b/src/corelib/io/qfilesystemengine_win.cpp
@@ -879,7 +879,9 @@ static bool tryDriveUNCFallback(const QFileSystemEntry &fname, QFileSystemMetaDa
 #if !defined(Q_OS_WINCE) && !defined(Q_OS_WINRT)
     if (fname.isDriveRoot()) {
         // a valid drive ??
+        const UINT oldErrorMode = ::SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX);
         DWORD drivesBitmask = ::GetLogicalDrives();
+        ::SetErrorMode(oldErrorMode);
         int drivebit = 1 << (fname.filePath().at(0).toUpper().unicode() - QLatin1Char('A').unicode());
         if (drivesBitmask & drivebit) {
             fileAttrib = FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_SYSTEM;
diff --git a/src/corelib/io/qfsfileengine_win.cpp b/src/corelib/io/qfsfileengine_win.cpp
index 886d526fb1..689251a6c7 100644
--- a/src/corelib/io/qfsfileengine_win.cpp
+++ b/src/corelib/io/qfsfileengine_win.cpp
@@ -626,7 +626,9 @@ QFileInfoList QFSFileEngine::drives()
     QFileInfoList ret;
 #if !defined(Q_OS_WINCE) && !defined(Q_OS_WINRT)
 #if defined(Q_OS_WIN32)
+    const UINT oldErrorMode = ::SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX);
     quint32 driveBits = (quint32) GetLogicalDrives() & 0x3ffffff;
+    ::SetErrorMode(oldErrorMode);
 #endif
     char driveName[] = "A:/";