QuickBooks error H303 takes place while accessing the company file in the multi-user mode. When you try to open the file from your workstation, the error message prompts that the company file is located on the other computer, and your computer needs additional configuration to access the file. QuickBooks enables multiple user access to the file. However, improper setup or configuration of the hosting may give rise to error H303 in QuickBooks. In this blog, we will discuss some important aspects of the error alongside some general troubleshooting procedures.
Getting QuickBooks error H303 while opening the company file? Dial our QuickBooks error support number (801)-882-2349 and get access to prompt technical assistance
Why Am I Seeing The QuickBooks Error Message H303?
When multiple users in the software try to access the company file to update the financial records, missing components in the program triggers an error in opening the file. QuickBooks error H101 or H505 are some other error codes related to opening company file in multi-user mode. Below are some common reasons that can evoke QuickBooks error H303:
- Damaged network data (.ND) file can cause the error in opening your company records
- When QuickBooks fails to acquire the server hosting the company file or IP address of the system
- When QuickBooks Database Server Manager service is not running
- Improper setup of the server hosting configuration
- QuickBooks cannot communicate with the server due to Firewall blocking can promote error code H303
- When your computer is not connected to a stable Internet connection
How to Troubleshoot QuickBooks Error Code H303?
This QuickBooks error code can be resolved by vanquishing the possible causes of the error code. When you don’t know what exactly prevents you from opening a company file, then you need to perform the troubleshooting solutions one after the other. The below-described solutions can help:
Solution 1: Make Use Of QuickBooks File Doctor
QuickBooks File Doctor can fix the data damages in the company file and network issues that can bring forth error H303 while opening the company file in multi-user mode. To utilize the QFD tool, you must log in as an administrator.
- From Tool Hub, download and install QuickBooks File Doctor
- Run QFD tool to repair the file that must not be larger than 2GB
- Resolve the company file and network issues causing QuickBooks multi-user mode error H303
Solution 2: Check If the File Hosting Settings Are Correct
If this QuickBooks error code persists, then you need to check if the QuickBooks settings for hosting company files are correct.
- Launch QuickBooks in multi-user mode
- Now select the file on both the hosting computers and then disable the company file hosting by Utilities >> Stop Hosting Multi-User Configuration
- Now enable hosting on one of the computers by performing the given series of action File >> Utilities >> Host Multi-User Configuration
- Now open QuickBooks on both the systems and check if this QuickBooks error code is fixed or not. Move to the next solution if the error persists.
Solution 3: Try To Open the File from a New Location
To perform this procedure, follow the below-listed steps:
- Make a new folder on the computer hosting the company file
- Now set up and share the Windows access permissions to share the company file
- Move the QuickBooks company (.QBW) file to the newly created folder
- Open the company file from its new location in multi-user mode
Solution 4: Modify the Firewall Settings
If none of the above-given solutions help in the error-resolution, then try to fix the Firewall that is blocking QuickBooks from accessing the server.
- Start the computer and go to the Control Panel
- Navigate to the Control Panel to locate and choose Firewall Settings
- Under Firewall Settings, select Allow a Program through Firewall
- Now, you will get the option to Add Program to the exception list of Firewall
- Add QuickBooks from the list of the programs and then restart your computer
The successful implementation of the steps can resolve QuickBooks error H303.
Still Getting QuickBooks Desktop Error H303!
If you want to avail any kind of technical assistance in the error resolution, then feel free to dial our QuickBooks error helpline number (801)-882-2349. In no time, you will be connected to a certified QB technical support expert to get all your doubts cleared related to QuickBooks error H303.

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