QuickBooks Error Code 6190 816is a technical error that should be fixed in the initial stage to not face any further issues.

This error code pops up with an error message QuickBooks was unable to open the company file on the hosted computer.

The Post signifies that the user can’t access QuickBooks company file.

You can solve this error by following simple steps.Method 1: Repair Your QuickBooks Registry FilesMethod 2: Run System Malware ScanMethod 3: Upgrade Your QuickBooks SoftwareMethod 4: Delete the Temporary Files and FoldersMethod 5: System RestoreMethod 6: Update to the Latest Version of WindowsMethod 7: Run QuickBooks Tool HubMethod 8: Single-Mode User CheckMethod 9: Use QuickBooks Refresher ToolMethod 10: Fix the Mismatch