When you open a company file you receive the following error:
This error occurs when:
Intuit recommends 3 solutions for this problem. The first solution may solve your problem, or you may need to try all 3 to resolve the issue. For best results, perform the solutions in the order shown.
Database Server Manager is responsible for hosting QuickBooks company files over the network. It controls access to company files using QBDataServiceUserXX. Damaged QBDataServiceUserXX can cause errors when opening company files.
If your QuickBooks opens without any errors: