Businesses using QuickBooks in multi-user mode sometimes encounter Error 6123 when one user accidentally blocks file access. Here’s how to prevent it:

1. Designate a File Host
Choose one PC or server to be the QuickBooks host. All other users connect to QB company files through this system. Make sure QuickBooks Database Server Manager (QBDBMgrN.exe) is installed and running on the host.

2. Grant Consistent Folder Permissions
On the host machine, go to the shared company folder, then navigate to Properties, and select the Security and Sharing tabs. Provide full access to “NETWORK SERVICE,” “SYSTEM,” QuickBooks Services, and Windows users.

3. Use a Static IP for Host
Ensure users connect to the host’s static IP rather than a dynamic or desktop name that may change.

4. Keep All Systems Updated
Update QuickBooks to the latest maintenance release on all workstations. After that, reinstall Database Server Manager on the host.

5. Avoid Simultaneous Local and Network Operations
Do not open the company file locally while sharing it over a network. Use only one method to prevent conflicts.

6. Monitor Antivirus/Firewall Exceptions
Exclude QuickBooks folders and QBDBMgrN.exe from the scan paths on all PCs. Interference often causes Error 6123 during multi-user file access.

7. Educate Users
Provide clear instructions to help reduce accidental changes to file-related .TLG and .ND files. No one should rename or delete these files.

By following these steps and sharing specific error logs, teams can avoid the frustrating Error 6123 while collaborating in QuickBooks.

Read More:https://qbookassist.com/quickbooks-error-6123/