QuickBooks Error 6010, 100 – Causes, Fixes & Expert Help

QuickBooks Error 6010, 100 usually appears when a user tries to open a company file in a multi-user setup, but QuickBooks fails to access the file. The error indicates a problem with the network setup, damaged files, or incorrect configurations.

This article explains the causes, identification methods, step-by-step solutions, and preventive tips for fixing QuickBooks Error 6010, 100. It also offers details about expert support if needed.

Watch this quick video to learn the causes and solutions for QuickBooks Error Code 6010, 100.

What is QuickBooks Error “6010, 100”?

QuickBooks Error 6010, 100 is a company file access error. It stops QuickBooks from opening or using the file in a network or multi-user environment. The error often appears with a message:
“Your QuickBooks installation may have been modified. Try re-installing QuickBooks and then try again. [Error 6010, -100]”

This issue occurs when QuickBooks is unable to read the .QBW file due to incorrect file access settings or background services being interrupted.

Why does QuickBooks Error “6010, 100” occur?

This error is caused by interference from other applications or misconfigurations in the system settings. Common reasons include:

• QuickBooks Database Server Manager is not running properly.
• .ND (Network Data) or .TLG (Transaction Log) files are damaged or misconfigured.
• Antivirus or firewall software is blocking QuickBooks access.
• The computer is not hosting the company file properly.
• QuickBooks installation files are corrupted or altered.

How can you identify QuickBooks Error “6010, 100”?

You can identify this error by observing these symptoms while opening your company file:

• Error code “6010, 100” appears on the screen.
• QuickBooks crashes or freezes while opening the file.
• You are unable to access the file in multi-user mode.
• You receive repeated prompts to reinstall QuickBooks.
• Networked users are unable to access the shared file.

What are the steps to fix QuickBooks Error “6010, 100”?

Follow these solutions step-by-step to fix the error and regain access to your company file.

Solution 1: Rename the .ND and .TLG Files

These configuration files can become corrupted and cause file access issues.

1. Close QuickBooks Desktop.
2. Open the folder where your company file is stored.
3. Locate the files with extensions .ND and .TLG having the same name as your company file.
4. Right-click each file and rename it. Add .old at the end (e.g., company.qbw.nd → company.qbw.nd.old).
5. Reopen QuickBooks and try accessing the file.

Solution 2: Run QuickBooks Database Server Manager

This tool helps resolve issues related to hosting and file sharing.

1. Open the QuickBooks Tool Hub.
2. Go to the Network Issues tab.
3. Select QuickBooks Database Server Manager.
4. Click Browse and locate your company file folder.
5. Click Start Scan.
6. Once the scan is complete, close the tool and reopen QuickBooks.

Solution 3: End QuickBooks Processes via Task Manager

Ensure no conflicting QuickBooks processes are running in the background.

1. Press Ctrl + Shift + Esc to open Task Manager.
2. Go to the Processes tab.
3. End these tasks one by one: QBDBMgrN.exe, QBW32.exe, and qbupdate.exe.
4. Restart your system and relaunch QuickBooks.

Solution 4: Reinstall QuickBooks using Clean Install Tool

A clean installation ensures that damaged files or settings are replaced properly.

1. Download and install the QuickBooks Tool Hub.
2. Open it and select the Installation Issues tab.
3. Click on Clean Install Tool and follow the on-screen steps.
4. Reinstall QuickBooks Desktop.

Solution 5: Check Hosting Settings on Workstations

Make sure only the server hosts the company file.

1. Open QuickBooks on each workstation.
2. Go to File > Utilities.
3. If you see “Stop Hosting Multi-User Access,” click it.
4. Repeat on all workstations except the server computer.

Is there an automated tool to fix QuickBooks Error “6010, 100”?

Yes, the QuickBooks Tool Hub includes automated tools like File Doctor and Database Server Manager that help repair file access and network configuration errors, including Error 6010, 100. These tools reduce manual troubleshooting and save time.

How can I prevent QuickBooks Error “6010, 100” in the future?

To avoid this error again:

• Regularly update QuickBooks and the system firewall.
• Run weekly scans using the QuickBooks Database Server Manager.
• Avoid using third-party software that modifies QuickBooks files.
• Do not host company files on multiple systems.
• Schedule periodic backups to secure your data.

What if QuickBooks Error “6010, 100” is not fixed after troubleshooting?

If the error continues after all solutions, there may be deeper issues with system configurations, Windows Registry, or damaged network protocols. In such cases, expert help is recommended to avoid data loss.

How can our experts assist you in resolving QuickBooks Error “6010, 100”?

Our certified QuickBooks professionals at Error Code Experts provide deep-dive diagnostics and permanent fixes for QuickBooks Error 6010, 100. We use advanced tools to repair files and restore multi-user connectivity.

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