What does this message mean: You cannot choose this path! Synchronizing this folder can generate problems!

The following are conditions when Outlook files and folders cannot be synchronized: 

  • Master drives such as C:, D:, Z: etc.
  • Windows system files and all folders beneath the folder "Windows"
  • Directories with Windows application data
  • Databases, such as QuickBooks
  • The Outlook folders "Deleted Items" and "Outbox"
  • Network shares/drives