Learn How to Fix QuickBooks Desktop Error 6190
                     Fixing QuickBooks Desktop 
Error 6190: Step-by-Step 
Solutions
When trying to open the company file in single-user mode, QuickBooks Desktop Error 6190 
appears. This means that to collaborate on work, you must convert to multi-user mode. 
Additionally, discrepancies between the TLG and QBW files can contribute to this issue, causing 
difficulty accessing the company file on either the host PC or a workstation, depending on the 
underlying cause.
Error 6190 in QuickBooks is among the 6000 series errors related to local or network setups. 
Users often encounter this issue after using the QB diagnostic tool or when trying to open their 
company file in a multi-user setup. As a result, multi-user access becomes disrupted, hindering 
simultaneous work. This blog comprehensively addresses the causes of the error and provides 
recommended solutions. Be sure to read the entire blog for detailed insights.
Although resolving QuickBooks issue 6190 can be difficult, our team of specialists is 
available to help. Use our toll-free number (1.855.856.0042) to get in touch with us if you 
need quick fixes for your problems.

What Elements Leads to the Error 6190 in QuickBooks 
Desktop?
The error 6190 in QuickBooks Desktop can be caused by a variety of circumstances; we've 
listed the most common ones below.
• Over time, an outdated QuickBooks Desktop becomes prone to errors and lacks crucial 
updates, resulting in diminished functionality, safety vulnerabilities, and minimal extras of 
new features.
• Firewall limitations may interfere with the exchange of data among multiple users, causing 
communication disruptions and impeding collaborative work on QuickBooks, leading to 
potential errors and delays.
Solution of the 6190 Error in QuickBooks
Below are some immediate general solutions to try when encountering the 6190 error in 
QuickBooks:
Solution 1: Update QuickBooks While Logged in with Administrative 
Privileges.
The initial solution focuses on obtaining the latest security enhancements, features, and bug 
fixes to resolve issues within your QuickBooks program.
• Search for QuickBooks Desktop, right-click the icon, and select 'Run as administrator.‘
• Once on the 'No Company Open' screen, go to the Help menu and choose 'Update 
QuickBooks Desktop.'
• In the Options tab, select 'Mark All' and save your selections.
• Switch to the 'Update Now' tab and check the 'Reset Update' box.
• Click 'Get Updates' when ready.
Solution 2: Include Firewall Ports as Exceptions
Go through these steps to proceed with the solution.
• From the Start menu, head to the ‘Windows Firewall.’
• Make the choice 'Advanced Settings.‘
• Right-click on 'Inbound Rules' and select 'New Rule' to add a new rule.
• Select 'Port' and press the Next button.
• Choose the 'Port' option and click Next. Select 'TCP.‘
• Enter the necessary ports for your QuickBooks Desktop version in the designated field.
• Click Next after inputting the port number.
• If prompted, select ‘All profiles’ and click ‘Next.’
• Create and name the rule accordingly.
• Click ‘Finish’ to complete the process.
• Repeat the same steps for 'Outbound Rules' starting from Step 4.
Our comprehensive blog on addressing QuickBooks Desktop Error 6190 concludes here. 
We've endeavoured to cover all pertinent strategies to resolve this issue. We trust that 
following these expert recommendations will enable you to successfully open your company 
file. Should you encounter any problems or encounter another problem throughout this 
method, we encourage you to reach out to our expert team via the toll-free number 
1.855.856.0042. We are determined to promptly address any issues you may encounter.