• Microsoft Edge 44
• Mozilla Firefox version 66
• Google Chrome version 73
• Apple Safari version 12.1

Other web browsers may function correctly, but are not supported by Fortinet.

• Microsoft Edge 41
• Microsoft Internet Explorer version 11
• Mozilla Firefox version 59
• Google Chrome version 65
• Apple Safari version 9.1 (For Mac OS X)

Other web browsers may function correctly, but are not supported by Fortinet.

See important compatibility information in Fortinet Security Fabric upgrade. For the latest information, see FortiManager compatibility with FortiOS in the Fortinet Document Library.

Upgrade FortiManager before upgrading FortiGate.

See important compatibility information in Fortinet Security Fabric upgrade. For the latest information, see FortiAnalyzer compatibility with FortiOS in the Fortinet Document Library.

Upgrade FortiAnalyzer before upgrading FortiGate.

• 6.0.0

See important compatibility information in Fortinet Security Fabric upgrade.

If you're upgrading both FortiOS and FortiClient from 5.6 to 6.0, upgrade FortiClient first to avoid compatibility issues.

FortiClient for Linux is supported on Ubuntu 16.04 and later, Red Hat 7.4 and later, and CentOS 7.4 and later.

If you are using FortiClient only for IPsec VPN or SSL VPN, FortiClient version 5.6.0 and later are supported.

• 5.6.0 and later

• 5.4.2 and later

• 5.4.2 and later
• 5.6.0 and later

• 5.4.3 and later
• 5.6.0 and later

• 3.6.9 and later

• 5.2.5 and later

Supported models: FCTL-5103B, FCTL-5903C, FCTL-5913C

• 2.3.3 and later

• 5.0 build 0292 and later (needed for FSSO agent support OU in group filters)
• Windows Server 2019 Datacenter
• Windows Server 2019 Standard
• Windows Server 2019 Core
• Windows Server 2016 Datacenter
• Windows Server 2016 Standard
• Windows Server 2016 Core
• Windows Server 2012 Standard
• Windows Server 2012 R2 Standard
• Windows Server 2012 Core
• Windows Server 2008 (32-bit and 64-bit)
• Windows Server 2008 R2 64-bit
• Windows Server 2008 Core
• Novell eDirectory 8.8

• 3.3.2, 4.0.0

• 6.00027

• 4.00061

Virtualization Environments

• XenServer version 5.6 Service Pack 2
• XenServer version 6.0 and later

• RHEL 7.1/Ubuntu 12.04 and later
• CentOS 6.4 (qemu 0.12.1) and later

• Hyper-V Server 2008 R2, 2012, 2012 R2, and 2016

• XenServer version 3.4.3
• XenServer version 4.1 and later

• ESX versions 4.0 and 4.1
• ESXi versions 4.0, 4.1, 5.0, 5.1, 5.5, 6.0, 6.5, and 6.7