FOLLOW THESE STEPS, IF QUICKBOOKS ERROR CODE 6129 0 OCCURS.
If QuickBooks Error Code 6129 0 Occurs, Follow These Solutions Solution 1: Update QuickBooks. Solution 2: Run Quickbooks File Doctor from the QuickBooks Tools Hub. Solution 3: Rename the QuickBooks Network Descriptors (.ND) Solution 4: Create a new folder and move your QuickBooks company files into it. Solution 5: Ensure all computers are connected to the same domain.