If you don't see your particular problem in the list below, check the
QuickBooks Support site on the Web.
Before trying these troubleshooting suggestions, make sure that you have set up multi-user QuickBooks.
Go to the computer where the company file is located and open
the company file in multi-user mode. If asked whether you want to
use that computer to host multi-user access to the company file, click
Yes. Then, go to another computer and try opening the company file in
I chose the alternate multi-user setup, but now multiple computers
are set up to host multi-user access to the company file.
More than one computer can be set up to host multi-user access. On a particular
day, the first computer to open the file in multi-user mode is the one that
is hosting multi-user access.
Note: Because there is a wide variety of software and hardware firewalls, we can only provide general information here. If you need help configuring your particular firewall, please consult your firewall's documentation.
In multi-user environments, QuickBooks uses the Internet protocol TCP/IP for data communication. If your company's network is protected by a firewall, you may need to reconfigure your firewall software to allow QuickBooks to communicate using TCP/IP.
You can configure most firewall software to give access to specific programs. To give QuickBooks access, configure your firewall software as shown in the table for these QuickBooks programs:
(Incoming and Outgoing traffic)
If you receive errors while in multi-user mode, you can search for the error online at the
QuickBooks Support Site.
You can contact Support by using Access Support Resources,
or you can review Troubleshooting multi-user problems.
About multi-user QuickBooks
I set up the company file on a network server, but not
all users have permission to the folder where the company file is located.
Troubleshoot QuickBooks licenses
Improve performance in multi-user mode