Knowing about QuickBooks Antivirus exclusions is essential to ensure smooth performance, especially when using multi-user mode or accessing large company files. Firewalls and antivirus systems often block QuickBooks processes, causing errors like H202, 6123, or connectivity drops. In this forum, members share detailed instructions on how to configure exclusions, including ports, folders, and program files necessary for QuickBooks Desktop. Follow these steps to minimize interference and enjoy better reliability. Join the conversation to learn secure ways of whitelisting QuickBooks files in popular antivirus programs. For further configuration help, you can call +1-866-408-0444.