QuickBooks Error H303

To fix the QuickBooks Error H303, you need to follow the given solutions that are as follows:

Configure Firewall Settings: Like mentioned above in the root causes configuring the firewall settings can help you fix the QB Error H303 are as follows:

• Open the Control Panel and tap on the Firewall settings.
• Look for the option which is ‘Allow a program through firewall’ and hit it. 
• Now look for the program and fill in the QuickBooks version in the exception list. 

By following these steps, you can easily configure the Firewall Settings and quickly fix the error. However, if this solution doesn’t work move on to the next given solution, which may help you fix the error. 

Changing the QuickBooks Folder location: Changing the QuickBooks Folder location that will help you resolve the QuickBooks Error H303. The steps to do that are as follows: 

• Make a new folder on the server PC and then allow windows access permission. 
• Now copy the folder named as .qbw file and move them to another folder according to your convenience. 
• Try to access the same Company File from the other workstation. 

These solutions will certainly help you fix the QuickBooks Error H303. Restarting the software and the PC or the workstation that is facing this error is highly recommended.  You can also look for the update of your QuickBooks Desktop software, and if that is available, please ensure that you download and update your software to its latest version. Running a scan from one of the QuickBooks official Tools is QuickBooks File Doctor and QuickBooks Tool Hub, and in case if that also doesn’t work, you must hire a QuickBooks Expert that is available at the QuickBooks Desktop Error Support.