While utilizing QuickBooks Desktop in a multi-client condition, clients regularly face trouble identified with firewall issues. On the off chance that the firewall isn't refreshed, it will square Internet get to required for explicit QuickBooks projects or records. How to Resolve Windows Firewall is blocking QuickBooks is one of the most common error while using QuickBooks Software. Configuring windows firewall can be done automatically by downloading and installing QuickBooks file doctor. Windows Firewall is Blocking Quickbooks, Windows Firewall is Blocking Quickbooks 2018, Firewall Blocking Quickbooks 2019 & 2020, Windows Firewall is Blocking Quickbooks 2016 We fix all Quickbooks technical issues & errors service contact phone number ☎ 1(800)993-4190. Source: https://rb.gy/keq4cv Include QuickBooks firewall ports exemptions QuickBooks Desktop 2019: 8019, XXXXX QuickBooks Desktop 2018: 8019, 56728, 55378-55382 QuickBooks Desktop 2017: 8019, 56727, 55373-55377 QuickBooks Desktop 2016: 8019, 56726, 55368-55372.