QuickBooks Connection Diagnostic Tool has been specifically launched to resolve network issues that pop up while accessing the QuickBooks software. For the most part, QuickBooks diagnostic tool helps its users in resolving error codes encountered during the installation of software like .Net framework, MSXML, and C++- related errors. Along with this, the tools provide the best achievable ways to resolve QuickBooks-related issues & bugs. You should have the installation of the diagnostic tool on your system to prevent yourself from getting such technical glitches.