quickbooks error 6129 101 pops up on the screen when the database connection verification fails. It can also appear whenever you attempt to access or create a new company file in QB Desktop. You might also get this error when you try to access the company file located on a different domain on the network. Get rid of this error immediately by performing the troubleshooting steps below: The Windows starts running sluggishly, and also it responds slowly to the inputs of the mouse and keyboard. Your system might freeze frequently. Additionally, it also crashes the active running Window. If you are looking for any further assistance for QuickBooks Error 6129, get in touch with the experts by dialing the support number +1-855-738-0359.