When a necessary file or folder cannot be accessed by the software, "QuickBooks Error 1606" happens. This is frequently the result of improper installation paths, missing files, or permission problems. It frequently shows up when you launch QuickBooks or during installation or updates. Fixing it could need reinstalling QuickBooks, fixing the installation, or changing permissions. For instant assistance, contact us at +1.833.802.0002 to speak with a QuickBooks support specialist.