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Error 6123 (Error in Database Connection)

PostedOctober 3, 2024

UpdatedOctober 3, 2024

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Troubleshooting QuickBooks Error 6123

Troubleshooting QuickBooks Desktop Error 6123

Step	Action	Description
Step 1	Rename the .ND and .TLG Files	QuickBooks uses .ND and .TLG files to connect with the company file over a network. Renaming these files can help fix the issue: Navigate to the folder where your company file is saved. Find the files with the same name as your company file but with extensions .ND and .TLG. Right-click each file and select Rename. Add .OLD to the end of the file name (e.g., `companyfile.ND.OLD`).
Step 2	Use QuickBooks File Doctor	Run the QuickBooks File Doctor to automatically detect and fix issues: Download and install QuickBooks Tool Hub from the official website. Open Tool Hub and go to the Company File Issues tab. Run the QuickBooks File Doctor and follow the prompts to repair the company file.
Step 3	Move the Company File to a Different Location	Sometimes, moving the company file to a different folder or location can help resolve the issue: Copy your company file (extension .QBW) to a new folder on your desktop or another location. Open QuickBooks and try opening the company file from the new location.
Step 4	Disable Antivirus or Firewall Temporarily	Your antivirus or firewall may be blocking QuickBooks from accessing the company file: Temporarily disable your antivirus or firewall software. Try reopening the company file in QuickBooks. Ensure QuickBooks and QuickBooks Database Server Manager are added as exceptions in the firewall settings.
Step 5	Recreate Damaged User	If the user profile is corrupted, creating a new user can resolve the issue: Open QuickBooks and go to Company > Setup Users. Create a new user with administrator privileges. Log in using the new user and try accessing the company file.
Step 6	Restart QuickBooks Services	Restarting QuickBooks-related services on the server can help fix network-related issues: Open the Run window and type `services.msc`. Find and restart services such as QuickBooksDBXX (XX is the year of your QuickBooks version) and QBCFMonitorService.
Step 7	Restore a Backup of the Company File	If none of the above steps work, restore a recent backup of your company file: Go to File > Open or Restore Company. Select Restore a Backup Copy and follow the prompts to restore a backup.
Step 8	Reinstall QuickBooks Desktop	If the error persists, reinstall QuickBooks Desktop: Uninstall QuickBooks from your computer through Control Panel > Programs and Features. Reinstall QuickBooks using the installation files or download a fresh copy from the Intuit website. Restore the company file after reinstalling.