What is Quickbooks Diagnostic Connection Tool
                     What is Quickbooks Diagnostic Connection Tool?
Intuit's Quickbooks Connection Diagnostic tool is a tool designed, 
developed, and marketed to fix all types of errors related to Network 
connectivity and multi-user in Quickbooks Company files. Intuit offers 
this tool for free to QuickBooks users, so they can easily take 
advantage of it. The QB tool is specifically designed to deal with errors 
in the 6000 series and H series. Using this tool, the user can develop a 
connection to other applications such as Quickbooks database server 
manager and Quickbooks Company records.
Errors resolved by by Quickbooks Diagnostic Connection Tool
Following are the errors resolved by Quickbooks connection diagnostic tool
● Error connecting to the database
● Quickbooks 6000 series errors, including Error -6150, Error -6000 -82, Error 
-6000 -301, Error -6147, Error -6103
● Database connection to Quickbooks lost 
● Quickbooks file missing, damaged, or infected by a virus
● Multi-user Error or H series error, i.e., H101, quickbooks error code h202, 
H303, H505 
● Port issues with Windows Firewall.
● There are damaged files in the system registry.