QuickBooks File Doctor is a what you need if you can't open your company file, most 6000 series errors (such as 6129, 613, 6000 83, etc), an H202 error, or other networking errors regarding multi-user setup.
For QuickBooks 2014 R5 and above, you may be prompted to run the internal (built-in) version of File Doctor. If so, please see the (Built-in) File Doctor for QuickBooks 2014 R5 and above article for more information.
QuickBooks File Doctor will:
Once the diagnosis is complete, you may see the following results: Important: Regardless of the results below, it is recommended to first try opening your file after running the File Doctor as it may have fixed the issue. If you run into problems, then check the following results for more information.
Optional: Tell us what you think! Please indicate what specific error code you received that prompted you to run the QuickBooks File Doctor.