QuickBooks Cannot Communicate with the Company File Try These Easy Fixes
                     QuickBooks Cannot 
Communicate With The Company 
File? Try This
Third-party firewalls in QuickBooks control some processes that lead to it developing 
several errors periodically. It also hinders QuickBooks from properly opening a company 
file or even QuickBooks Desktop application and other errors above. The particular issue 
we will address in this article is failed communication. This common error type prevents 
QuickBooks from using the company file named ‘
QuickBooks cannot communicate with the company file.’ 
Firewalls are the main reason for such communication issues, yet other barriers may occur 
when QuickBooks tries to establish a link to a company file hosted on a remote server. But 
sometimes, this error can be very irritating. To resolve this issue, we’ve created this 
informative article that encompasses all the procedures and measures for solving it.

What Causes Connectivity Issues in QuickBooks?
Connectivity errors such as QuickBooks error 6123, 0, and other 6XXX errors can be 
triggered for multiple reasons; let’s find out these one by one.
• Incorrect folder permissions prevent the company file folder from sharing the specific 
file.
• The error may occur if a recently updated firewall blocks the ports or permissions for 
QuickBooks to access the company file over the network. Ensure firewall settings allow 
QuickBooks communication.
Solutions to Fix QB Can’t Communicate with the 
Company File
Resolving the QB can’t communicate with the company file issue becomes simpler once you 
follow the steps and procedures outlined below. Let's examine each measure individually:
Solution 1: Make Use of the File Doctor Tool
Follow these steps to download the QuickBooks Tool Hub and use the QuickBooks File Doctor 
tool. The tool will perform a mini-repair on the server and firewall. After completing the repair, 
open the company file in QuickBooks Desktop.
Step 1: QuickBooks Tool Hub Installation
The QuickBooks Tool Hub often resolves various errors. Ensure QuickBooks is closed before 
using the Tool Hub. 
• Shut down QuickBooks.
• Avail the latest version of QuickBooks Tool Hub.
• If you have previously installed Tool Hub, check your version under the Home tab at the 
bottom.
• Open the downloaded file. Click twice to open the program.
Step 2: Execute QuickBooks File Doctor
• From the Tool Hub, head to the Company File Issues tab.
• Select Run QuickBooks File Doctor.
• It may take up to one minute for File Doctor to open.
• Select your company file from drop-down menu in QuickBooks File Doctor.
• Click Browse to locate it.
• Choose Check your file, then click Continue.
• Enter the QuickBooks admin password and click Next.
Solution 2: Adjusting Firewall Settings
Below are the steps to manually configure the firewall port:
• Look for the Windows Firewall option from the Start menu.
• The Firewall screen will appear.
• Click on the Advanced Settings button.
• Right-click on Inbound Rules and select New Rules.
• Choose the option for ports and click Next.
• Ensure TCP is selected and proceed to the next step.
• Enter the specific ports required for your QuickBooks version in the local ports field.
• Click Next after entering the port numbers.
• Enable the connection and click Next.
• Verify that all profiles are checked as required.
• Click Next to proceed.
• Create a New Rule.
• Finally, click Finish to complete the process.
This article has been informative for you in resolving the issue of QuickBooks cannot 
communicate with the company file. Go through the blog in detail to completely solve the 
issue.