You see this error when you try to create a new company file or open an existing one:
Database connection verification failure.
Error code: -6129, 0
This error can be caused by:
Intuit recommends more than one solution for this problem. The first solution may solve your problem, or you may need to try all of them to resolve the issue. For best results, perform the solutions in the order shown.
Note: Disabling antivirus software while connected to the Internet using a persistent connection such as DSL or cable is not recommended. Disconnect the computer from the Internet before disabling the antivirus software. Then, when you are finished with these steps, re-enable the antivirus software before reconnecting the computer to the Internet.
Please refer to an IT professional or the Network Administrator to add computers to the domain.