Windows firewall obstructs certain QuickBooks files and hinders access to the internet. As a consequence, several errors show up on the screen. Erroneous Firewall settings may obstruct your QuickBooks files from accessing the internet, thus blocking your work and productivity. To get snags of such nature rectified at the earliest, you need to configure the settings related to your Firewall and Security Software. To know how to configure firewall and security settings for QuickBooks desktop, go through this article till the very end.