How Network Settings Affect QuickBooks Company Files Improper network configuration can trigger QuickBooks Already Has a Company File Open unexpectedly. Users may also see QuickBooks Error Code 80070057 when QuickBooks fails to communicate with the company file location. Ensuring stable connectivity improves overall system reliability and prevents accounting delays. Visit us:https://writeupcafe.com/quickbooks-company-file-already-open-easy-fix-guide