Proven Solutions To Solve QuickBooks Error H303
                     Counter Methods To Tackle 
QuickBooks Error H303
QuickBooks helps users host the company file on a multi-user network to update new 
transactions in real time and let users access the file’s data for other accounting tasks. 
However, users can sometimes face QuickBooks Error H303 while sharing the 
company file due to issues in the server computer. If your QBDT also displays this error 
code when switching the server computer to multi-user mode, give this blog a read to 
discover why it happens and the techniques to terminate the issue quickly.
Resolve the error easily using the troubleshooting directions given by our QB 
experts at 1-855-856-0042 .

Reasons
The multi-user network in your QuickBooks won’t setup correctly after the occurrence of 
this error. The causes of the server computer failing to host the company file due to this 
error are discussed below-
• QuickBooks Database Server Manager fails to run due to Windows Firewall 
restrictions or damaged Network Descriptor file.
• The company file fails to run in QuickBooks due to its unreadable format after 
incurring damage.
• One of the users have accessed the data file in a single user, making it inaccessible 
to others.
Solutions
You might also face problems opening the company file on a workstation after this error 
message appears on the screen. The methods you need to rectify the issue from your 
computer are discussed below-
Solution 1- Scan the Network Descriptor file on your DBSM 
after recreating it
QuickBooks might face problems setting up a network to share the company file data if the 
Database Server Manager fails to run or crashes in the background. This can happen if the 
Network Descriptor file gets damaged and doesn’t run when DBSM tries accessing it. You 
can resolve the problem by recreating the Network Descriptor file and registering it on the 
network using the Database Server Manager. Use the steps mentioned below-
• Go to the QuickBooks folder using the file explorer and right-click the .nd file located inside.
• Tap the Rename option in the list and add ‘.old’ as an extension to the network descriptor file 
name.
• Save the file with the changed extension and launch the Database Server Manager on your 
PC.
• Single-click the Scan Folders tab and tap the Browse option located under it.
• Specify the location of the QB folder where you renamed the file and tap Start Scan.
• Wait for the scan to complete and try hosting the company file after reopening the software.
If the software develops an error while switching to multi-user mode, move to the next solution.
Solution 2- Repair the company file before sharing it with 
other users
QuickBooks multi-user network can also fail if the company file gets damaged and fails 
to run when the server computer tries to access it. You must repair the company file 
before hosting it on the network. Use the QuickBooks tool hub as shown in the following 
steps-
• Open the QB tool hub on your device and go to the Company file issues option.
• Click Quick fix my file and wait until the tool mends the data file automatically.
• Relaunch QuickBooks.
Conclusion
This blog helps to learn why QuickBooks Error H303 stops the server computer from 
switching to multi-user mode. The techniques required to remove the multi-user mode error 
are included in the blog, which you must apply to prevent issues while sharing the company 
file.
Talk to our QB support team at 1-855-856-0042 if issues develop while using the solutions.