Quickbooks Tool Hub is the repairing tool which is a combination of all the essential tools to diagnose errors in Quickbooks. Rather than use individual tools for Quickbooks, you can use the Quickbooks tool hub which can save your time. It's the collection of all Quickbooks tools in a single application. Quickbooks tool hub can fix the below common issues. Network Problems Installation issues Networking and Connection Troubles Company Files Problem Password issues. Performance Issues Company File issues. Error 6123 Error H202 Printing Troubles PDF related Problems Crashing Issues Freezing issues