QuickBooks Error 6190 816: A Complete Guide to Troubleshoot

Struggling with QuickBooks Error 6190 816? This file mismatch issue can halt your work. Call +1-866-500-0076 now for expert help and quick resolution.

Finance Apr 15, 2025 65 Add to Reading List

If you're staring at the dreaded QuickBooks Error 6190 816 message, chances are you're trying to open your company file, only to be blocked by an unexpected system glitch. This error is a common occurrence in multi-user environments, and while it might seem technical and confusing, the solution is well within reach.

In this guide, we’ll break down what causes this error, how to fix it step by step, and how to prevent it from recurring in the future. For immediate assistance, you can also call our QuickBooks support experts at +1-866-500-0076—we're ready to help you get back on track.

Experiencing QuickBooks Error 6190 816? Call +1-866-500-0076 now to get expert help fixing this file access issue and resume work in minutes.

What Is QuickBooks Error 6190 816?

QuickBooks Error 6190 816 is a file access error that appears when QuickBooks fails to open the company data file due to a mismatch between the .QBW (company file) and the .TLG (transaction log file), or when multiple users try to access the file in a misconfigured setup.

The error typically reads:

“QuickBooks was unable to open the company file. It may have been opened by another user. Error Codes: (-6190, -816)”

It’s annoying, yes—but not a dead end.

Why Does QuickBooks Error 6190 816 Happen?

Here are the most common reasons why you might be seeing this error:

Mismatch between .QBW and .TLG files
Someone is logged in using Single-User Mode
A user tried to access the file from a location with network issues
QuickBooks was closed incorrectly or the system crashed during use
Corrupted company or support files
Different versions of QuickBooks Desktop being used on multiple systems

Knowing the cause is half the fix. Let’s get into the solutions.

How to Fix QuickBooks Error 6190 816

Before diving in, make sure you’ve backed up your company file. These steps are safe, but it’s always good practice to back up your data first.

1. Run QuickBooks File Doctor

This is your first go-to tool when dealing with file access issues.

Download and install the QuickBooks Tool Hub.
Open the tool and navigate to Company File Issues.
Click Run QuickBooks File Doctor.
Select your company file and allow it to scan for problems.

Let the scan complete—it automatically detects and resolves common data file problems.

2. Rename the .ND and .TLG Files

These are support files that help QuickBooks run in multi-user mode. If they become damaged or mismatched, errors like 6190 816 can occur.

Steps:

Go to the folder where your company file is stored.
Find the files that match your company file name but end in .ND and .TLG.
Rename them like this:
- companyname.qbw.nd → companyname.qbw.nd.old
- companyname.qbw.tlg → companyname.qbw.tlg.old
Reopen QuickBooks and check if the error is gone.

3. Verify Hosting Settings on All Systems

Improper multi-user setup can block access.

On each computer, open QuickBooks and go to File > Utilities.
If you see Host Multi-User Access, do nothing.
If it says Stop Hosting Multi-User Access, select it to disable hosting.
Only the server or host system should have hosting enabled.

This ensures QuickBooks doesn’t get confused by conflicting access settings.

4. Update QuickBooks on All Computers

Running different versions of QuickBooks across systems can cause compatibility issues.

Launch QuickBooks and go to Help > Update QuickBooks Desktop.
Choose Update Now and select Get Updates.
Restart QuickBooks and verify the update is applied.

Make sure all systems are on the same version of QuickBooks to avoid sync problems.

5. Check Your Network Connection

If you’re accessing the file over a network, verify that:

All computers are connected properly
The file is located on a shared drive, not copied across systems
Network permissions allow access to the file

Poor or misconfigured networks can easily cause QuickBooks to throw file-related errors.

Still Seeing the Error? Call the Experts

If the error persists after trying these fixes, it’s time to escalate to professionals who deal with this every day.

Call +1-866-500-0076 and our certified QuickBooks support team will remotely diagnose and fix the issue. Whether it’s file corruption, improper hosting, or a deeper software conflict, we’ll get to the root of it—quickly and safely.

How to Prevent QuickBooks Error 6190 816 in the Future

You can avoid seeing this error again by following these simple best practices:

Always close QuickBooks properly
Keep all users on the same version
Use multi-user mode correctly (only host from one system)
Back up your data regularly
Avoid opening company files from external drives or temporary folders
Run QuickBooks File Doctor monthly for routine checks

Taking a few proactive steps now can save hours of frustration later.

Conclusion

While QuickBooks Error 6190 816 can be disruptive, it doesn’t have to slow down your business. With the tools and steps outlined above, you can fix the problem yourself—or reach out for expert support to handle it faster.

For immediate resolution, don’t hesitate to call us at +1-866-500-0076. We’re here 24/7 to help you get back to smooth bookkeeping and stress-free file access.