Running QuickBooks Database Server Manager from the QuickBooks Tool Hub is the most effective way to resolve the error. Follow the steps given below to do so:
Exit QuickBooks Desktop.
Download QuickBooks Tool Hub.
Go to downloads and open the QuickBooksToolHub.exe file.
Follow the prompt steps and start installing the tool hub.
Mark the agree to the terms and conditions checkbox.
Once the installation completes, the QuickBooks Tool Hub icon will appear on the desktop.
From the tool hub, choose the Network Issues tab.
Click Run QuickBooks Database Server Manager.
Open the server manager and then click Start Scan.
If you can’t find the file, click Browse and search to locate the file and then click Start Scan.
Open QuickBooks again.
Dial our toll-free number (1800-579-9430) and talk to certified QuickBooks professionals if you still have any queries about QuickBooks error 6210.
