If you are wondering What does QuickBooks File Doctor diagnose the tool can check certain company file corruption file access, and network connectivity problems It may help identify issues affecting QuickBooks Desktop and multi-user access File Doctor is available through QuickBooks Tool Hub For troubleshooting guidance with company file or network errors call <span style="box-sizing: border-box; font-weight: bold; color: #333333; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;" data-start="420" data-end="438">1-866-513-4656</span> for assistance.