Can't Open QuickBooks Company File - Firewall Error Introduction to QuickBooks QuickBooks is a accounting tool which is developed by Intuit, and it is a web-based cloud accounting for preparing the company accounts and managing the financial transactions of the company. It plays a vital role in monitoring the financial statements of the company. It is used for book-keeping, tax planning, data management, supplier and vendor registration, professional invoice creation, tracking the expenses and payments of suppliers and vendors in order to manage the financial expenses of the company properly. Thus the main motto of this tool is to build a strong financial backbone of the company. QuickBooks has the most special feature that it can be used for any company size and it is very cost effective. Firewall Blocking Quickbooks This is the line which reflects on the user screen while facing the quickbooks firewall error. Actually quickbooks firewall error is the issue that arises while ope