We tested QuickBooks Pro and Premier 2020 with the following firewall and antivirus programs.
In some cases, you may need to adjust some settings in these programs to get the best possible QuickBooks performance.
- Windows Server Firewall (all editions)
- Windows 8.1 Firewall (all editions)
- Microsoft Security Essentials
- NortonLifeLock (formerly Symantec)
Note: QuickBooks will work with systems running RAID (Redundant Array of Inexpensive Disks) but this is not recommended because it may cause QuickBooks to operate slowly.
QuickBooks Desktop 2020 requires internet security protocol TLS 1.2 for the connected services to work smoothly.