Simple Guide to Fix QuickBooks Error H303
                     Troubleshooting Tips For 
QuickBooks Error H303
QuickBooks is a top-grade bookkeeping software that precisely handles the 
business accounting of its users. The software also provides the convenience of 
sharing financial data between multiple users. Unfortunately, internal issues 
can sometimes affect the multi-user network established by the software. 
QuickBooks error H303 prevents the user from hosting their company file due to 
incorrect settings. In case you also get troubled by this error in your 
QuickBooks, keep reading this blog further to review its causes and the 
techniques to resolve it.
GET THIS ISSUE QUICKLY FIXED BY QB PROFESSIONALS BY REACHING 
THEM AT 1-855-856-0042.

Reasons
You’ll encounter this hosting error in QuickBooks due to the following reasons-
• The company file you try to open is already in use by another user in single-
user mode, or the workstations are running in multi-user mode.
• The company file got struck with a virus attack or data corruption on your 
system and has turned into an unreadable format.
• Database Server Manager fails to run the .TLG or .ND file.
Solutions
You can take help of the following methods to counter this QuickBooks error on 
your computer-
Solution 1- Set up QB hosting settings
When you use the multi-user network in QuickBooks, only the server computer 
should be the one hosting the file in multi-user mode. If any workstation is 
switched to multi-user mode, the software will encounter this error instantly, 
and you won’t be able to access the company file. You need to configure the 
QuickBooks hosting settings as shown in the steps below-
• Open QuickBooks on your server computer and click File.
• Tap Utilities in the drop-down list and select Host multi-user access.
• Go to all the workstations individually and click on the File menu in 
QuickBooks.
• Select the Utilities option and click Stop Hosting multi-user access.
• Reboot all the systems.
• Open QuickBooks on your server computer and run the company file in 
multi-user mode.
• Reopen QuickBooks on all the workstations and access the company file.
If the error appears again while accessing the company file, try the next 
solution.
Solution 2- Mend the company file using QB Tool hub
The software can also develop this error while processing the company file if the 
file exists in an unsupported format due to damage. You need to fix the company 
file to make it usable for the software again. Go to the QuickBooks website and 
download the most recent version of the QB tool hub. Install the 
QuickBooksToolhub.exe file and use the steps given below-
• Launch the QB tool hub after installing it and click on the Company file issues.
• Select Run QuickBooks File Doctor tool from the options.
• Tap Browse and locate the company file on your system.
• Select the Check your file option and enter your admin password to begin the 
tool.
• Let the file get repaired completely and re-access it in QuickBooks.
After using the methods, you won’t face any issues opening or hosting the 
company file.
Conclusion
This blog provides everything you need to know about QuickBooks error H303. 
The causes of this error are mentioned, and the methods to terminate it are also 
discussed in detail. We hope the blog helped you in making your QuickBooks 
trouble-free again.
Contact a QB support representative at 1-855-856-0042 if you have any 
remaining doubts about this error.