QuickBooks Error Code 6144 82 typically occurs due to corrupted or damaged company files. To fix it, start by running the QuickBooks File Doctor tool to repair the files. Ensure all users are logged out, then restart the computer and QuickBooks. Open the company file from its original location, not a shortcut. Check folder permissions and configure your firewall settings to allow QuickBooks processes. If the issue persists, consider seeking assistance from QuickBooks support or a professional technician. For persistent issues, consult QuickBooks support or a certified professional for assistance at 1.855.409.2300.