Empty folder has 3.46 GB. Why?

Solution 1:

Click the "View" ribbon and check "Hidden Items" under the "Show/hide" section.

If the contents are still not visible, disable hiding of system files:

  1. Click "View" ribbon, Options
  2. Select "View" tab of Folder Options.
  3. Uncheck "Hide protected operating system files (Recommended)"
  4. Click OK