Fix network drive detection

We can't rely on the file system detection because Windows is reporting the underlying file system.

Fixes: #8272

1 files changed, 7 insertions, 2 deletions

diff --git a/src/common/vfs.cpp b/src/common/vfs.cpp
index d36caf093..b17417ad5 100644
--- a/src/common/vfs.cpp
+++ b/src/common/vfs.cpp
@@ -68,13 +68,18 @@ Result<bool, QString> Vfs::checkAvailability(const QString &path)
     const auto mode = bestAvailableVfsMode();
 #ifdef Q_OS_WIN
     if (mode == Mode::WindowsCfApi) {
-        if (QDir(QDir(path).canonicalPath()).isRoot()) {
+        const auto info = QFileInfo(path);
+        if (QDir(info.canonicalPath()).isRoot()) {
             return tr("The Virtual filesystem feature does not support a drive as sync root");
         }
-        const auto fs = FileSystem::fileSystemForPath(path);
+        const auto fs = FileSystem::fileSystemForPath(info.absoluteFilePath());
         if (fs != QLatin1String("NTFS")) {
             return tr("The Virtual filesystem feature requires a NTFS file system, %1 is using %2").arg(path, fs);
         }
+        const auto type = GetDriveTypeW(reinterpret_cast<const wchar_t *>(QDir::toNativeSeparators(info.absoluteFilePath().mid(0, 3)).utf16()));
+        if (type == DRIVE_REMOTE) {
+            return tr("The Virtual filesystem feature is not supported on network drives");
+        }
     }
 #else
     Q_UNUSED(path);