You must set up a computer to host multi-user access to the company file. Choose
the type of setup you want to perform.
Recommended setup: For the most reliable multi-user setup, Intuit
recommends that you install QuickBooks or the QuickBooks Server on the same computer as the company
file and set up that computer to host multi-user access. Click the Recommended
Setup button and follow the installation and setup instructions.
Alternate setup: If you cannot install QuickBooks or the QuickBooks Server on the same computer
as the company file, you can use your computer to host multi-user access
to company files. Click the Alternate Setup button to have QuickBooks set
up hosting for you on your computer.
You can also resolve the problem by moving
the company file to your computer.
Note: If you have already set up multi-user QuickBooks but you still
can't open the company file, review the troubleshooting
Install the QuickBooks Server
About setting up multi-user QuickBooks