QuickBooks Multi-User Mode not working means that QuickBooks is unable to connect with the server computer hosting the company file . Instead of opening in shared mode, QuickBooks switches to single-user mode , restricting access for other users.
Why QuickBooks Multi-User Mode Stops Working?
Several factors can trigger this problem:
- Incorrect Hosting Configuration on server or workstations.
- Firewall or Security Software Blocking QuickBooks.
- QuickBooks Database Server Manager Not Running .
- Damaged or Missing .ND File (Network Data file).
- QuickBooks Services (QBCFMonitorService, QuickBooksDBXX) Disabled .
How to Fix QuickBooks Multi-User Mode Not Working
1. Check Hosting Settings
- On each workstation, open QuickBooks > File > Utilities .
- Ensure only the server computer has “Host Multi-User Access” enabled.
2. Verify QuickBooks Services
- Press Windows + R , type
services.msc. - Locate QuickBooksDBXX and QBCFMonitorService .
- Set them to Automatic and ensure they are running.
3. Configure Firewall & Security
- Add QuickBooks and QBW32.exe as exceptions in Windows Firewall.
- Allow inbound and outbound ports used by QuickBooks.
4. Rename .ND File
- Locate your company file folder.
- Find the .ND file (e.g.,
CompanyFile.qbw.nd). - Rename it to
CompanyFile.qbw.nd.old. - Rescan files using QuickBooks Database Server Manager .
5. Use QuickBooks Tool Hub
- Download and install QuickBooks Tool Hub (latest version).
- Run the Network Issues Repair Tool to auto-fix connection errors.
Final Thoughts
When QuickBooks Multi-User Mode is not working , it’s usually due to network or hosting misconfigurations. Following the above methods should help you restore multi-user access. If you still face the issue, simply dial 877-419-2575 and let a certified QuickBooks support professional fix it quickly.