Accounting Professionals

Accounting Professionals
Accounting Troubleshooting

Tuesday, November 25, 2025

QuickBooks Error Code 6105

QuickBooks Error Code 6105 – Causes, Symptoms, and Step‑by‑Step Fixes

Description: “Learn how to fix QuickBooks Error 6105 with step‑by‑step troubleshooting methods. Contact Accounting Professional support for expert help.”

QuickBooks is a powerful accounting tool, but like any software, it can run into errors that disrupt workflow. One such issue is QuickBooks Error Code 6105, which typically occurs when your company file becomes corrupted or support files are damaged. In this article, we’ll explain the causes, symptoms, and verified solutions to help you resolve this error quickly.

🔍 What is QuickBooks Error 6105?

Accounting Professionals

QuickBooks Error 6105 appears when users attempt to access their company file and the file is either corrupted, contains invalid entries, or is blocked by damaged support files. It may also occur due to incomplete updates or issues with the Windows operating system.

⚠️ Common Causes

  • Damaged QuickBooks company data file

  • Corrupted support files (.ND or .TLG)

  • Incomplete or failed QuickBooks update installation

  • Invalid file name or extension

  • Corrupted Windows operating system

🖥️ Symptoms of Error 6105

  • QuickBooks stops responding or displays a blank screen

  • Sudden system shutdowns without warning

  • Other applications begin to malfunction

  • Decline in overall QuickBooks performance

  • Inability to click tabs or buttons inside QuickBooks

🛠 Step‑by‑Step Solutions

1. Run Verify and Rebuild Data Utility

  • Go to File → Utilities → Verify Data.

  • If errors are detected, run Rebuild Data.

  • Create a backup before rebuilding.

  • Once complete, restart QuickBooks and check if the issue is resolved.

2. Rename Support Files (.ND and .TLG)

  • Locate your QuickBooks company file folder.

  • Find files with extensions .ND and .TLG.

  • Rename them to .OLD (e.g., companyfile.nd.OLD).

  • Restart QuickBooks—new support files will be created automatically.

3. Reinstall QuickBooks Desktop

  • Uninstall QuickBooks via Control Panel → Programs and Features.

  • Restart your computer.

  • Reinstall QuickBooks using the installation file.

  • Launch QuickBooks and check if the error persists.

💡 Pro Tips

  • Always back up your company file before troubleshooting.

  • Keep QuickBooks updated to the latest release.

  • Store backups on both local and cloud drives for safety.

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