Fortunately, restarting the Database Server Manager is a straightforward process that can resolve many of these issues and restore your team's access to QuickBooks. Below is a step-by-step guide with two different methods depending on your setup.

Method 1: Restart Using the Windows Services Console
This method works if you only have the Database Server Manager installed on your server computer (without the full QuickBooks Desktop program).

Step 1: Open the Run dialog box

Press Windows + R on your keyboard to open the Run window.

Step 2: Open Windows Services

Type services.msc into the Run box and press Enter.

This opens the Services window, which lists all the services running on your computer.

Step 3: Find the QuickBooksDB service

Scroll down the list until you find a service with a name like QuickBooksDBXX.

Note: The "XX" in the service name represents the version year—for example:

QuickBooksDB28 (for QuickBooks 2018)

QuickBooksDB29 (for QuickBooks 2019)

QuickBooksDB30 (for QuickBooks 2020)

QuickBooksDB31 (for QuickBooks 2021)

Step 4: Restart the service

Right-click the service and select Restart from the menu.

If the Restart option is grayed out, you can click Stop first, wait a few seconds, then click Start.

Step 5: Verify it's running

After restarting, check that the Status column shows "Running" for the service.

Step 6: Test QuickBooks

Open QuickBooks on a workstation and try to access the company file in multi-user mode.

Method 2: Restart Using QuickBooks Desktop
Use this method if you have the full QuickBooks Desktop program installed on your server computer alongside the Database Server Manager.

Step 1: Open your company file in multi-user mode

Launch QuickBooks Desktop on your server computer.

Go to File → Open or Restore Company.

Select Open a company file, then browse and select your company file.

Check the box that says Open file in multi-user mode.

Click Open and sign in to your company file.

Step 2: Close the company file

Go to File → Close Company/Log off. This will close the company file on the server while keeping QuickBooks open.

Step 3: Open the Database Server Manager

Open the Windows Start menu.

Type "Database" into the search bar and select QuickBooks Database Server Manager from the results.

Step 4: Rescan your company files

In the Database Server Manager window, ensure your company file folder is listed.

If it's not, click Browse to add the folder.

Click Start Scan to refresh the file monitoring.

Step 5: Test connectivity

Try opening the company file from a workstation in multi-user mode to confirm the restart worked.

What If the Service Won't Start?
If the Database Server Manager service won't start or keeps stopping, try these solutions:

1. Verify the service user account
   The service uses a dedicated Windows user account called QBDataServiceUserXX (where XX is your version).

To check its permissions:

Open Control Panel → User Accounts.

Find the QBDataServiceUserXX account.

Ensure it has Administrator privileges.

2. Configure Recovery Options
   Set the service to restart automatically if it fails:

In the Services window, double-click your QuickBooksDBXX service.

Go to the Recovery tab.

For First failure, select Restart the Service.

Do the same for Second failure and Subsequent failures.

Click OK to save.

3. Restart the server computer
   Sometimes the simplest fix is a full restart of your server computer. After restarting, follow the steps above again.

Common Errors and When to Seek Help
"The QuickBooksDBXX service on Local Computer started and then stopped"
This error indicates a damaged QuickBooks Database Server Manager installation. You may need to uninstall and reinstall the Database Server Manager.

"QBCFMonitorService Not Running" Error
If the QBCFMonitorService is stopped, try restarting it manually through the Services console. If it won't stay running, check your firewall settings as they may be blocking the service.

When to contact an IT professional
If these steps don't resolve the issue, it's time to escalate. For example, when upgrading QuickBooks versions, conflicts between old and new installations can cause the Database Server Manager to fail. A professional can help with more advanced diagnostics, including checking Windows event logs for specific error details.

For immediate expert assistance, call +1-888-394-9046.

Final Conclusion
Restarting QuickBooks Database Server Manager is a simple but effective step to resolve multi-user connectivity issues. The method you use depends on your setup: use the Windows Services Console if you only have the Database Server Manager installed, or use QuickBooks Desktop if you have the full program on your server. If the service won't start, check the QBDataServiceUser account permissions and configure recovery options.