Easy methods for troubleshooting QuickBooks Error Message H303
                     QuickBooks error h303 methods 
to effectively tackle 
QuickBooks Error Message H303

QuickBooks H series errors are one of the most 
common errors in the application. One such error is 
the QuickBooks Error H303, which can arise while 
using the company file. This error prompts the user to 
perform an additional configuration to locate 
the QuickBooks files. There can be many reasons for 
this issue, including the file being located on another 
computer. In this article, we will help you 
address QuickBooks Error Code H303 by providing 
you with the best solutions.
If you are having trouble understanding the 
steps or resolving the error message on your 
own, you can call us at 1.855.738.2784 to get 
assistance from our team of QB experts.
QuickBooks Desktop Error H303: 
Common Factors
You might be getting QuickBooks error message H303 due to 
the following common scenarios –
1.The hosting settings on your server computer are 
misconfigured, and you need to modify them.
2.The QB component files, like the ND and TLG files, are 
damaged or corrupted, causing company file issues.
3.QuickBooks is unable to derive the IP address of the server 
computer, or the IP address might be incorrect.
4.Windows firewall is causing an obstruction while accessing 
QuickBooks, which is leading to issues while opening the 
company file.
5.The network between the server and the workstations is 
severed or broken.
Practical Solutions to Address the QuickBooks 
Company File Error H303
If you are encountering the error code H303 in QuickBooks Desktop, you need to 
perform the steps given below –
Step 1 - Edit the Startup Settings for your Database 
and Monitor Services
You need to ensure that essential QB services are running correctly to eliminate 
the QuickBooks multi-user mode H303.
•From the Windows Start menu, access the Run window by typing Run in the appeared search 
box and hitting Enter.
•Go to the Run window and type msc to search for the QuickBooksDBXX service and double-
click on it.
•From the Startup Type tab, select Automatic and check that the service status is set as 
Running or Started.
•If not, choose Start and click on the Recovery tab to restart the service by selecting Restart 
Service from the drop-down menu. 
•Select the following failures, namely the First failure, Second failure, and Subsequent failures, 
and hit Apply & OK to end the service activation process.
Step 2 – Add the Services to the 
Windows Admin Group by Editing the 
Folder Permissions
Set up the folder access permissions to allow the QB services to 
run correctly.
•Right-click the folder containing your company file and select 
Properties from the Security tab.
•Click Edit and give Full Control to QBDataServiceUserXX by 
clicking the Allow button.
•Open File Explorer by pressing the Windows + E keys and right-
click the company file folder.
•From Properties, move to the Sharing tab and select Add to add 
the corresponding QBDataServiceUserXX and set the permission 
level to Full Control.
Conclusion
You can utilize the steps provided in this blog to 
address QuickBooks Error H303. If the issue 
persists, you can call us at 1.855.738.2784 to get 
assistance from our technical support team.