QuickBooks Company file is used to store all the company's financial information in a single place. Usually, users might come across QuickBooks Error 6129 while opening or creating the data file. It appears with an error message stating, "Error code: -6129, 0: Database connection verification failed". Being one of the common errors there can be multiple causes that can prompt this error. Below we have explained a few of them :

• Incorrect entries in the Windows registry may be responsible. 

• Another reason may be if there is an abrupt system shutdown because of the power failure. 

• Due to a damaged file named ".ND", the QB application cannot access the data file stored on the network. 

 For any additional help to eliminate QuickBooks Error 6129, feel free to reach the experts by dialing the toll-free number +1-855-738-0359.