DOCUMENT LIBRARY
DOCUMENT LIBRARY
Products
Best Practices
Hardware Guides
Products A-Z
Summary
By Solution
By 4D Pillars
By Cloud
Secure Networking
Unified SASE
Security Operations
Secure SD-WAN
Secure Access Service Edge (SASE)
ZTNA
LAN Edge
Identity and Access Management
Next Generation Firewall
Public Cloud
Private Cloud
FortiCloud
Secure Networking
Hybrid Mesh Firewall
FortiGate/ FortiOS
FortiGate-5000
/
6000
/
7000
NOC Management
FortiManager
/
FortiManager Cloud
Managed Fortigate Service
LAN
FortiSwitch
FortiAP / FortiWiFi
FortiEdge Cloud
FortiNAC-F
WAN
Secure SD-WAN
FortiExtender
More >>
Unified SASE
Single Vendor SASE
FortiSASE
Secure SD-WAN
Zero Trust Network Access (ZTNA)
FortiProxy
FortiMonitor
Cloud Network Security
FortiGate Public Cloud
FortiGate Private Cloud
FortiGate CNF
FortiFlex
Lacework FortiCNAPP
Secure Endpoint Connectivity
FortiClient
/
FortiClient Cloud
Web Application / API Protection
FortiWeb
FortiADC
FortiDAST
More >>
Security Operations
Security Operations Automation
FortiAnalyzer
/
FortiAnalyzer Cloud
FortiSIEM
/
FortiSIEM Cloud
FortiSOAR
SOC-as-a-Service (SOCaaS)
Identity
FortiAuthenticator
FortiTrust Identity
FortiPAM
Early Detection & Prevention
FortiSandbox
/
FortiSandbox Cloud
FortiNDR
FortiDeceptor
FortiRecon
More >>
Secure Networking
Hybrid Mesh Firewall
FortiGate/ FortiOS
FortiGate-5000
/
6000
/
7000
NOC Management
FortiManager
/
FortiManager Cloud
Managed Fortigate Service
FortiAIOps
LAN
FortiSwitch
FortiAP / FortiWiFi
FortiAP-U Series
FortiEdge Cloud
FortiNAC-F
WAN
Secure SD-WAN
FortiExtender
Communication & Surveillance
FortiVoice
/
FortiVoice Cloud
FortiFone
FortiCamera
FortiRecorder
FortiCentral
Unified SASE
Single Vendor SASE
FortiSASE
Secure SD-WAN
Zero Trust Network Access (ZTNA)
FortiProxy
FortiMonitor
Secure Endpoint Connectivity
FortiClient
/
FortiClient Cloud
Cloud Network Security
FortiGate Public Cloud
FortiGate Private Cloud
FortiGate CNF
FortiFlex
Cloud-Native Security
Lacework FortiCNAPP
FortiDevSec
Web Application / API Protection
FortiWeb
FortiADC
FortiDAST
Security Operations
Security Operations Automation
FortiAnalyzer
/
FortiAnalyzer Cloud
FortiSIEM
/
FortiSIEM Cloud
FortiSOAR
Endpoint
FortiClient
/
FortiClient Cloud
FortiEDR/XDR
Data Protection
FortiDLP
FortiDLP Agent
FortiDLP Policies
Identity
FortiAuthenticator
FortiTrust Identity
FortiToken
/
FortiToken Cloud
FortiPAM
Email
FortiMail
FortiPhish
Early Detection & Prevention
FortiSandbox
/
FortiSandbox Cloud
FortiNDR
FortiDeceptor
FortiRecon
Expert Services
SOC-as-a-Service (SOCaaS)
Edge Firewall
FortiGate/FortiOS
FortiGate-5000
/
6000
/
7000
FortiGate Public Cloud
FortiGate Private Cloud
Orchestration & management
FortiManager
/
FortiManager Cloud
FortiAnalyzer
/
FortiAnalyzer Cloud
Overlay-as-a-Service
SD Branch
FortiSwitch
FortiAP / FortiWiFi
FortiExtender
/
FortiExtender Cloud
Application Delivery
FortiADC
/
FortiGSLB
Single Vendor SASE
FortiSASE
Secure Endpoint Connectivity
FortiClient
/
FortiClient Cloud
Secure Private Access
Secure SD-WAN
Zero Trust Network Access (ZTNA)
Thin Edge
FortiGate/ FortiOS
FortiAP / FortiWiFi
FortiExtender
/
FortiExtender Cloud
Identity
FortiAuthenticator
FortiTrust Identity
FortiToken Cloud
FortiToken
Application Gateway
FortiGate/ FortiOS
FortiProxy
FortiADC
/
FortiGSLB
Enterprise Asset Management
FortiClient EMS
Endpoint Agent
FortiClient
/
FortiClient Cloud
Agentless Security Posture
FortiNAC-F
FortiSIEM
/
FortiSIEM Cloud
Identity
FortiAuthenticator
FortiTrust Identity
FortiToken Cloud
FortiToken
Wireless
FortiAP / FortiWiFi
FortiAP-U Series
FortiGate Cloud
Switching
FortiSwitch
FortiEdge Cloud
FortiNAC-F
Identity
FortiAuthenticator
FortiTrust Identity
FortiToken Cloud
FortiToken
Privilege Acccess Management
FortiPAM
Next Generation Firewall
FortiGate / FortiOS
FortiGate-5000
/
6000
/
7000
FortiGate Public Cloud
FortiGate Private Cloud
Orchestration & management
FortiManager
/
FortiManager Cloud
FortiAnalyzer
/
FortiAnalyzer Cloud
Expert Services
SOC-as-a-Service (SOCaaS)
Managed Fortigate Service
All
FortiADC Public Cloud
FortiAnalyzer Public Cloud
FortiAuthenticator Public Cloud
FortiDeceptor Public Cloud
FortiGate Public Cloud
FortiIsolator Public Cloud
FortiManager Public Cloud
FortiNDR Public Cloud
FortiPAM Public Cloud
FortiPortal Public Cloud
FortiProxy Public Cloud
FortiSandbox Public Cloud
FortiTester Public Cloud
FortiVoice Public Cloud
FortiWeb Manager Public Cloud
FortiWeb Public Cloud
All
FortiADC Private Cloud
FortiAnalyzer BigData Private Cloud
FortiAnalyzer Private Cloud
FortiAuthenticator Private Cloud
FortiDeceptor Private Cloud
FortiGate Private Cloud
FortiManager Private Cloud
FortiNDR Private Cloud
FortiPAM Private Cloud
FortiProxy Private Cloud
FortiSandbox Private Cloud
FortiTester Private Cloud
FortiVoice Private Cloud
FortiWeb Manager Private Cloud
FortiWeb Private Cloud
Account Management
FortiCloud Services
SAAS Management
FortiGate Cloud
FortiEdge Cloud
FortiEdge Cloud
FortiExtender Cloud
FortiPresence Cloud
FortiToken Cloud
FortiTrust Identity
FortiZTP
FortiCamera Cloud
SAAS Application Security
FortiWeb Cloud
FortiGSLB
FortiCASB
FortiCNP
FortiInsight
FortiPhish
FortiGate CNF
Managed Services
SOC-as-a-Service (SOCaaS)
Managed Fortigate Service
Platform as a service (PAAS)
FortiSASE
FortiAnalyzer Cloud
FortiManager Cloud
FortiClient Cloud
FortiSandbox Cloud
FortiMail Cloud
FortiSOAR Cloud
Other SAAS Services
Overlay-as-a-Service
FortiRecon
FortiConverter
ForiIPAM
FortiFlex
FortiCare Elite
4D Resources
Solution Hubs
Define, design, deploy, demo
4D Pillars
Secure SD-WAN
Zero Trust Network Access
Wireless
Switching
Secure Access Service Edge
Identity and Access Management
Next Generation Firewall
Curated Links by Solution
Cloud
FortiCloud
Public & Private Cloud
Popular Solutions
Secure SD-WAN
Zero Trust Network Access
Secure Access
Security Fabric
Tele-Working
Multi-Factor Authentication
FortiASIC
Operational Technology
MSSP
Next Generation Firewall
FortiAnalyzer
FortiAnalyzer Big-Data
FortiADC
FortiAP / FortiWiFi
FortiAP U-Series
FortiAuthenticator
FortiCache
FortiCarrier
FortiController
FortiDDoS
FortiDDoS-F
FortiDeceptor
FortiExtender
FortiGate-5000
FortiGate-6000
FortiGate-7000
FortiHypervisor
FortiIsolator
FortiMail
FortiManager
FortiNAC
FortiNDR
FortiProxy
FortiRecorder
FortiGate
FortiRPS
FortiSandbox
FortiSIEM
FortiSwitch
FortiTester
FortiToken
FortiVoice
FortiWAN
FortiWeb
FortiWLC
FortiWLM
AscenLink
AV Engine
AWS Firewall Rules
Container FortiOS
FortiADC
FortiADC E Series
FortiADC Manager
FortiADC Private Cloud
FortiADC Public Cloud
FortiAIOps
FortiAnalyzer
FortiAnalyzer BigData
FortiAnalyzer BigData Private Cloud
FortiAnalyzer Cloud
FortiAnalyzer Private Cloud
FortiAnalyzer Public Cloud
FortiAP / FortiWiFi
FortiAP-U Series
FortiAuthenticator
FortiAuthenticator Private Cloud
FortiAuthenticator Public Cloud
FortiAuthProxy
FortiBalancer
FortiBranchSASE
FortiBridge
FortiCache
FortiCamera
FortiCamera Cloud
FortiCare Elite
FortiCarrier
FortiCASB
FortiCentral
FortiClient
FortiClient Cloud
FortiCloud Services
FortiCNP
FortiConnect
FortiController
FortiConverter Service
FortiConverter Tool
FortiCore
FortiCSPM
FortiCWP
FortiDAST
FortiDB
FortiDDoS
FortiDDoS-F
FortiDeceptor
FortiDeceptor DaaS
FortiDeceptor Private Cloud
FortiDeceptor Public Cloud
FortiDevSec
FortiDLP
FortiDLP Agent
FortiDLP Policies
FortiDNS
FortiEdge Cloud
FortiEDR/XDR
FortiEndpoint
FortiExplorer
FortiExplorer Go
FortiExtender
FortiFlex
FortiFone
FortiGate / FortiOS
FortiGate Cloud
FortiGate CNF
FortiGate Private Cloud
FortiGate Public Cloud
FortiGate-5000
FortiGate-6000
FortiGate-7000
FortiGate-as-a-Service
FortiGSLB
FortiGuard Advanced Bot Protection
FortiGuest
FortiHypervisor
FortiInsight
FortiInsight Cloud
FortiIPAM
FortiIsolator
FortiIsolator Public Cloud
FortiLAN Cloud
FortiMail
FortiMail Cloud
FortiManager
FortiManager Cloud
FortiManager Private Cloud
FortiManager Public Cloud
FortiMonitor
FortiNAC
FortiNAC-F
FortiNDR
FortiNDR (on-premise) Private Cloud
FortiNDR (on-premise) Public Cloud
FortiNDR Cloud
FortiNDR Cloud Sensors
FortiPAM
FortiPAM Private Cloud
FortiPAM Public Cloud
FortiPhish
FortiPlanner
FortiPolicy
FortiPortal
FortiPortal Public Cloud
FortiPresence
FortiPresence VM
FortiProxy
FortiProxy Private Cloud
FortiProxy Public Cloud
FortiRecon
FortiRecorder
FortiRPS
FortiSandbox
FortiSandbox Cloud
FortiSandbox Private Cloud
FortiSandbox Public Cloud
FortiSASE
FortiScanner
FortiSIEM
FortiSIEM Cloud
FortiSOAR
FortiSOAR Cloud
FortiSRA
FortiSwitch
FortiSwitch Manager
FortiTap
FortiTester
FortiTester Private Cloud
FortiTester Public Cloud
FortiToken
FortiToken Cloud
FortiTrust Identity
FortiVoice
FortiVoice Cloud
FortiVoice Private Cloud
FortiVoice Public Cloud
FortiWAN
FortiWAN Controller
FortiWeb
FortiWeb Cloud
FortiWeb Manager Private Cloud
FortiWeb Manager Public Cloud
FortiWeb Private Cloud
FortiWeb Public Cloud
FortiWLM
FortiZTP
IPS Engine
Lacework FortiCNAPP
Managed FortiGate Service
Overlay-as-a-Service
Security Awareness and Training
SOCaaS
Wireless Controller
Search documents and hardware ...
FortiWLC Release Notes
About FortiWLC 8.6.6
Supported Hardware and Software
Special Notices and Best Practices
Deployment Guidelines for 802.11ax APs
Installing and Upgrading
Getting Started with Upgrade
Supported Upgrade Releases
Check Available Free Space
Set up Serial Connection
Upgrade Advisories
Upgrading Virtual Controllers
Feature Groups in Mesh profile
Voice Scale Recommendations
Upgrading to 64-bit FortiWLC-50D/200D/500D
Upgrading for FAP-U231F/U234F/U431F/U432F/U433F Support
Upgrading FortiWLC-1000D and FortiWLC-3000D
Upgrading via CLI
Upgrading via GUI
Switching Partitions
Upgrading an NPlus1 Site
Restore Saved Configuration
Upgrading Virtual Controllers
Downgrading FortiWLC
Common Vulnerabilities and Exposures
Fixed Issues
Change log
Home
Wireless Controller 8.6.6
FortiWLC Release Notes
8.6.6
8.6.7
8.6.6
8.6.5
8.6.4
8.6.3
8.6.2
8.6.1
8.6.0
8.5.5
8.5.4
8.5.3
8.5.2
8.5.1
8.5.0
Downgrading FortiWLC
Downgrading FortiWLC
Downgrading FortiWLC to a previous version is not supported.
Previous
Next
Downgrading FortiWLC
Downgrading FortiWLC
Downgrading FortiWLC to a previous version is not supported.
Previous
Next
Home
Product Pillars
Network Security
Network Security
FortiGate / FortiOS
FortiGate 5000
FortiGate 6000
FortiGate 7000
FortiProxy
NOC & SOC Management
FortiManager
FortiManager Cloud
FortiAnalyzer
FortiAnalyzer Cloud
FortiMonitor
FortiGate Cloud
Enterprise Networking
Secure SD-WAN
FortiLAN Cloud
FortiSwitch
FortiAP / FortiWiFi
FortiAP-U Series
FortiNAC-F
FortiExtender
FortiExtender Cloud
FortiAIOps
Business Communications
FortiFone
FortiVoice
FortiVoice Cloud
FortiRecorder
FortiCamera
Zero Trust Access
ZTNA
Zero Trust Network Access
FortiClient EMS
SASE
FortiSASE
Identity
FortiAuthenticator
FortiTrust Identity
FortiToken Cloud
FortiToken
Cloud Security
Hybrid Cloud Security
FortiGate Public Cloud
FortiGate Private Cloud
FortiFlex
Cloud Native Protection
FortiCNP
FortiDevSec
Web Application / API Protection
FortiWeb
FortiWeb Cloud
FortiADC
FortiGSLB
FortiGuard ABP
SAAS Security
FortiMail
FortiMail Cloud
FortiCASB
Security Operations
SOC Platform
FortiAnalyzer
FortiAnalyzer Cloud
FortiSIEM
/
FortiSIEM Cloud
FortiSOAR
FortiPhish
Advanced Threat Protection
FortiSandbox
FortiSandbox Cloud
FortiNDR
FortiNDR Cloud
FortiDeceptor
FortiInsight
FortiInsight Cloud
FortiIsolator
Endpoint Security
FortiClient
FortiClient Cloud
FortiEDR
Best Practices
Solution Hubs
Cloud
FortiCloud
Public & Private Cloud
Popular Solutions
Secure SD-WAN
Zero Trust Network Access
Secure Access
Next Generation Firewall
Security Fabric
Tele-Working
Multi-Factor Authentication
FortiASIC
Operational Technology
MSSP
4-D Resources
Secure SD-WAN
Zero Trust Network Access
Wireless
Switching
Secure Access Service Edge
Identity and Access Management
Next Generation Firewall
Hardware Guides
FortiAnalyzer
FortiAnalyzer Big-Data
FortiADC
FortiAP / FortiWiFi
FortiAP U-Series
FortiAuthenticator
FortiCache
FortiCarrier
FortiController
FortiDDoS
FortiDDoS-F
FortiDeceptor
FortiExtender
FortiGate
FortiGate-5000
FortiGate-6000
FortiGate-7000
FortiHypervisor
FortiIsolator
FortiMail
FortiManager
FortiNAC
FortiNDR
FortiProxy
FortiRecorder
FortiRPS
FortiSandbox
FortiSIEM
FortiSwitch
FortiTester
FortiToken
FortiVoice
FortiWAN
FortiWeb
FortiWLC
FortiWLM
Product A-Z
AscenLink
AV Engine
AWS Firewall Rules
Container FortiOS
FortiADC
FortiADC E Series
FortiADC Manager
FortiADC Private Cloud
FortiADC Public Cloud
FortiAIOps
FortiAnalyzer
FortiAnalyzer BigData
FortiAnalyzer BigData Private Cloud
FortiAnalyzer Cloud
FortiAnalyzer Private Cloud
FortiAnalyzer Public Cloud
FortiAP / FortiWiFi
FortiAP-U Series
FortiAuthenticator
FortiAuthenticator Private Cloud
FortiAuthenticator Public Cloud
FortiAuthProxy
FortiBalancer
FortiBranchSASE
FortiBridge
FortiCache
FortiCamera
FortiCamera Cloud
FortiCare Elite
FortiCarrier
FortiCASB
FortiCentral
FortiClient
FortiClient Cloud
FortiCloud Services
FortiCNP
FortiConnect
FortiController
FortiConverter Service
FortiConverter Tool
FortiCore
FortiCSPM
FortiCWP
FortiDAST
FortiDB
FortiDDoS
FortiDDoS-F
FortiDeceptor
FortiDeceptor DaaS
FortiDeceptor Private Cloud
FortiDeceptor Public Cloud
FortiDevSec
FortiDLP
FortiDLP Agent
FortiDLP Policies
FortiDNS
FortiEdge Cloud
FortiEDR/XDR
FortiEndpoint
FortiExplorer
FortiExplorer Go
FortiExtender
FortiFlex
FortiFone
FortiGate / FortiOS
FortiGate Cloud
FortiGate CNF
FortiGate Private Cloud
FortiGate Public Cloud
FortiGate-5000
FortiGate-6000
FortiGate-7000
FortiGate-as-a-Service
FortiGSLB
FortiGuard Advanced Bot Protection
FortiGuest
FortiHypervisor
FortiInsight
FortiInsight Cloud
FortiIPAM
FortiIsolator
FortiIsolator Public Cloud
FortiLAN Cloud
FortiMail
FortiMail Cloud
FortiManager
FortiManager Cloud
FortiManager Private Cloud
FortiManager Public Cloud
FortiMonitor
FortiNAC
FortiNAC-F
FortiNDR
FortiNDR (on-premise) Private Cloud
FortiNDR (on-premise) Public Cloud
FortiNDR Cloud
FortiNDR Cloud Sensors
FortiPAM
FortiPAM Private Cloud
FortiPAM Public Cloud
FortiPhish
FortiPlanner
FortiPolicy
FortiPortal
FortiPortal Public Cloud
FortiPresence
FortiPresence VM
FortiProxy
FortiProxy Private Cloud
FortiProxy Public Cloud
FortiRecon
FortiRecorder
FortiRPS
FortiSandbox
FortiSandbox Cloud
FortiSandbox Private Cloud
FortiSandbox Public Cloud
FortiSASE
FortiScanner
FortiSIEM
FortiSIEM Cloud
FortiSOAR
FortiSOAR Cloud
FortiSRA
FortiSwitch
FortiSwitch Manager
FortiTap
FortiTester
FortiTester Private Cloud
FortiTester Public Cloud
FortiToken
FortiToken Cloud
FortiTrust Identity
FortiVoice
FortiVoice Cloud
FortiVoice Private Cloud
FortiVoice Public Cloud
FortiWAN
FortiWAN Controller
FortiWeb
FortiWeb Cloud
FortiWeb Manager Private Cloud
FortiWeb Manager Public Cloud
FortiWeb Private Cloud
FortiWeb Public Cloud
FortiWLM
FortiZTP
IPS Engine
Lacework FortiCNAPP
Managed FortiGate Service
Overlay-as-a-Service
Security Awareness and Training
SOCaaS
Wireless Controller
Ordering Guides
Download PDF
Table of Contents
About FortiWLC 8.6.6
Supported Hardware and Software
Special Notices and Best Practices
Deployment Guidelines for 802.11ax APs
Installing and Upgrading
Getting Started with Upgrade
Supported Upgrade Releases
Check Available Free Space
Set up Serial Connection
Upgrade Advisories
Upgrading Virtual Controllers
Feature Groups in Mesh profile
Voice Scale Recommendations
Upgrading to 64-bit FortiWLC-50D/200D/500D
Upgrading for FAP-U231F/U234F/U431F/U432F/U433F Support
Upgrading FortiWLC-1000D and FortiWLC-3000D
Upgrading via CLI
Upgrading via GUI
Switching Partitions
Upgrading an NPlus1 Site
Restore Saved Configuration
Upgrading Virtual Controllers
Downgrading FortiWLC
Common Vulnerabilities and Exposures
Fixed Issues
Change log
