QuickBooks error H303 occurs when operating the program in multi-user mode. As the name itself indicates, multi-user mode allows multiple users in the program to work on the same company file. This feature is designed to promote accuracy and efficiency in the accounting processes.

However, when accessing the company file located on the other computer, error code H303 in QuickBooks can take place. It is possible that the hosting configuration needs some modifications. This post will uncover the possible causes for the error, along with some effective solutions. Let’s explore.

Factors That Can Give Rise To H303 QuickBooks Error Windows 11

QuickBooks error code H303 can show up with a warning message if the company data is damaged or QuickBooks is unable to read the company file. Some other potential reasons behind the error are:

• Incorrect or damaged corresponding network data (.ND) file in QuickBooks.

• Essential services, such as QBCF Monitor or QuickBooks Database Server Manager Services, might be disabled.

• The hosting is not configured correctly on the host computer and workstations.

• The Firewall is blocking the communication of QuickBooks with the company file on the network.

Also Read: QuickBooks Error 15214

How To Fix H303 QuickBooks Error InMulti-User Environment?

When running the program in multi-user mode, you can resolve the QuickBooks Desktop error H303 by implementing these steps:

Solution One: Verify If The Hosting Is Correct Or Not

First things first, you will have to verify that the hosting is configured correctly on workstations as well as on the server computer.

Check On Workstations:

• When in multi-user mode, open the File menu and select Utilities.

• If it shows - Stop Hosting Multi-User Configuration, select it.

• Contrarily, if you see - Host Multi-User Access, leave it.

• Now, perform the same on each workstation, one after the other.

Test The Configuration Of Your Host Computer:

• On your host computer, go to the File menu and select Utilities.

• Now, don’t take any action if it shows, Stop Hosting Multi-User Configuration.

• However, if you see the Host Multi-User Access option, select it.

This will help you resolve the error H303 QuickBooks Desktop.

Solution Two: Change the QuickBooks Folder Location On the Host Computer

Sometimes, the file location on the host computer can also affect its accessibility. Therefore, we will re-examine the error after changing the QuickBooks folder location on the server computer:

• When you are on your host computer, create a new folder on it.

• Now, configure the Windows access permissions to enable file sharing.

• Subsequently, create a copy of the . QBW file in the new folder.

• You can now start your company file in a multi-user environment.

Solution Three: Adjust Firewall Settings To Resolve H303 QuickBooks Error

A firewall blocking the QuickBooks from communicating with the company file on the server computer can also give rise to the error. However, making the right adjustments in the settings can keep the problem at bay.

• Open your Firewall using the Control Panel option.

• Next, in the Firewall Settings, choose to Allow a Program through Firewall.

• Thereafter, you are supposed to select the Add Program option.

• Here, you will have to add QuickBooks to the exception list so that Firewall doesn’t interfere with its processes.

• In the end, restart your computer and check if the multi-user mode error H303 is fixed or not.

Also Know: QuickBooks Error 15103

Putting It Together!

The procedure we have discussed in this post is proven to troubleshoot the error H303 in QuickBooks. It is important that the steps are executed cautiously to achieve the desired results. You may also look for help from QuickBooks Resources to get rid of the problem.