How to Check Firewall Rules Blocking QuickBooks Check firewall logs and rules to identify QuickBooks being blocked. Open inbound and outbound rules, confirm correct ports are open, and allow all QuickBooks services. Ensuring accurate firewall configuration helps maintain network connectivity and secure access to company files. ---- https://www.apsense.com/article/868548-methods-to-fix-windows-firewall-is-blocking-quickbooks-issue.html