QuickBooks Error Code 6190 816 is a technical error that should be fixed in the initial stage to not to 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 the QuickBooks company file. You can solve this error by following simple steps.
Method 1: Repair Your QuickBooks Registry Files
Method 2: Run System Malware Scan
Method 3: Upgrade Your QuickBooks Software
Method 4: Delete the Temporary Files and Folders
Method 5: System Restore
Method 6: Update to the Latest Version of Windows
Method 7: Run QuickBooks Tool Hub
Method 8: Single-Mode User Check
Method 9: Use QuickBooks Refresher Tool
Method 10: Fix the Mismatch