Scenario:
When a user tries to open a second company file through the Open option in the File menu drop down of QuickBooks, the user gets the following error message. (One company file is already open in QuickBooks).

QuickBooks can't start because it is already running. Only QuickBooks Accountant and QuickBooks Enterprise can open more than one company file.

When the OK button in the warning box is clicked, QuickBooks crashes and the user gets another error from Web TimeSheet Integration Manager for QuickBooks.

QuickBooks is not open. Please open it and then try again.

Cause:
Web TimeSheet Integration Manager for QuickBooks would have a conflicting condition while trying to connect to the first company file or the second company file.

Resolution:
It is not recommended to open a second company file when the first company file is open and Web TimeSheet Integration Manager is connected to QuickBooks.
During the Integration process, open one company file so that Web TimeSheet Integration Manager can establish connection to that company file.

Additional Information:
It is not possible to open a second company file from Open command on the File menu within the QuickBooks. You can only open two company files at the same time in QuickBooks Accountant and QuickBooks Enterprise Solutions. The first file you open is labeled as Primary and has few limitations. The second file is labeled as Secondary and has more limitations. If you close the primary file when two files are open, the secondary file becomes the primary file.

There are two ways to open a secondary file:

  • Navigate to the company file in the file system and double-click the file name.
  • Double-click the icon that starts QuickBooks.

Note:
QuickBooks Help can only open in the current window. If Help is already open in one widow and you click Help in the other window, Help doesn't open again. Use the Help in the other window to search for a topic.