Known issues

The following issues have been identified in FortiClient (Windows) 6.4.8. For inquiries about a particular bug or to report a bug, contact Customer Service & Support.

Install and upgrade

Bug ID	Description
726616	FortiClient 6.4.3 cannot upgrade to 6.4.4.
749331	Windows Security settings show that FortiClient is snoozed when FortiEDR is installed.
773219	FortiClient (Windows) should not allow the user to uninstall it if settings are locked.

Application Firewall

Bug ID	Description
663024	Application Firewall does not include VMware Horizon VDI Agent signature.
776007	Application Firewall conflicts with Windows firewall, causing issues updating domain group policies.

Endpoint control

Bug ID	Description
693928	After FortiClient migrates to new EMS successfully, it does not remove original EMS from EMS list.
738813	FortiESNAC process causes high CPU.
764664	FortiClient falls out of sync with EMS.
789922	FortiClient (Windows) does not reattempt to register to EMS after license assignment until user shuts down or restarts FortiClient (Windows).

GUI

Bug ID	Description
752084	GUI for Sandbox exclusion list is not blocked completely and scrolling is impossible.
773355	Web Filter tab has display issue with German umlauts.

Zero Trust Telemetry

Bug ID	Description
683542	FortiClient (Windows) fails to register to EMS if registration key contains special character, such as " !"#$%&'()*+,-./:;<=>?@[\]^_`{\|}~" .
763957	FortiClient prompts for Telemetry key when Telemetry key changes on EMS.

Malware Protection and Sandbox

Bug ID	Description
721038	Customized access rule to allow USB, camera, and Bluetooth devices fails when default removable media access is blocked.
730054	Allow Admin Users to Terminate Scheduled and On-Demand Scans from FortiClient Console feature does not work as expected.
759834	FortiClient does not bypass keyboard and mouse device by default when default removable media access action is block.
760073	FortiClient (Windows) affects USB operation.
762125	fortimon3.sys causes blue screen of death during Slack calls.

Remote Access

Bug ID	Description
710877	SSL VPN with SAML (Azure Active Directory (AD)) and two gateways does not work.
711402	Per-user autoconnect does not establish and per-machine autoconnect remains connected after logon to Windows.
729610	Save username and password are enabled but FortiClient incorrectly saves encrypted password when user enters Spanish characters.
731127	SSL VPN with SAML tunnel displays error that empty username is not allowed.
743106	IPsec VPN XAuth does not work with ECDSA certificates.
744544	FortiClient (Windows) always saves SAML credentials.
758424	Certificate works for IPsec VPN tunnel if put it is in current user store, but fails to work if it is in local machine.
759138	FortiSASE VPN traffic inconsistently goes through the FortiSASE tunnel when trusted traffic is enabled.
762986	If FortiClient (Windows) cannot reach the first remote gateway when connecting to a resilient tunnel from FortiTray, FortiClient does not use the second FortiGate to connect.
771090	Saving username for IPsec VPN tunnel does not work.
773060	Microsoft Surface Pro connected to VPN on wireless connection cannot access SQL Server Reporting Services report, software hosted on internal server.
790404	GUI is missing SAML button.
794110	VPN before logon does not work with Okta as multifactor authentication and disclaimer message acceptance is enforced.
794658	If the first remote gateway becomes offline with IPsec VPN resilience when VPN is up, FortiClient does not use the second FortiGate to connect to VPN.

Web Filter

Bug ID	Description
781874	Website does not load with `ERR_CONTENT_LENGTH_MISMATCH` error.
793017	Web Filter option disconnects an application's underlying connection.

Zero Trust tags

Bug ID	Description
731525	FortiClient (Windows) does not properly detect Zero Trust tag for not having antivirus up-to-date.
759235	Zero Trust Network Access Bitlocker (BL) policy is not matched despite FortiClient (Windows) having BL protection enabled.

Other

Bug ID	Description
725631	Windows 10 laptop network interfaces stay unavailable after hibernation or sleep.
749458	FortiClient (Windows) displays specific email address related to social network login using Gmail account.

Known issues

The following issues have been identified in FortiClient (Windows) 6.4.8. For inquiries about a particular bug or to report a bug, contact Customer Service & Support.

Install and upgrade

Bug ID	Description
726616	FortiClient 6.4.3 cannot upgrade to 6.4.4.
749331	Windows Security settings show that FortiClient is snoozed when FortiEDR is installed.
773219	FortiClient (Windows) should not allow the user to uninstall it if settings are locked.

Application Firewall

Bug ID	Description
663024	Application Firewall does not include VMware Horizon VDI Agent signature.
776007	Application Firewall conflicts with Windows firewall, causing issues updating domain group policies.

Endpoint control

Bug ID	Description
693928	After FortiClient migrates to new EMS successfully, it does not remove original EMS from EMS list.
738813	FortiESNAC process causes high CPU.
764664	FortiClient falls out of sync with EMS.
789922	FortiClient (Windows) does not reattempt to register to EMS after license assignment until user shuts down or restarts FortiClient (Windows).

GUI

Bug ID	Description
752084	GUI for Sandbox exclusion list is not blocked completely and scrolling is impossible.
773355	Web Filter tab has display issue with German umlauts.

Zero Trust Telemetry

Bug ID	Description
683542	FortiClient (Windows) fails to register to EMS if registration key contains special character, such as " !"#$%&'()*+,-./:;<=>?@[\]^_`{\|}~" .
763957	FortiClient prompts for Telemetry key when Telemetry key changes on EMS.

Malware Protection and Sandbox

Bug ID	Description
721038	Customized access rule to allow USB, camera, and Bluetooth devices fails when default removable media access is blocked.
730054	Allow Admin Users to Terminate Scheduled and On-Demand Scans from FortiClient Console feature does not work as expected.
759834	FortiClient does not bypass keyboard and mouse device by default when default removable media access action is block.
760073	FortiClient (Windows) affects USB operation.
762125	fortimon3.sys causes blue screen of death during Slack calls.

Remote Access

Bug ID	Description
710877	SSL VPN with SAML (Azure Active Directory (AD)) and two gateways does not work.
711402	Per-user autoconnect does not establish and per-machine autoconnect remains connected after logon to Windows.
729610	Save username and password are enabled but FortiClient incorrectly saves encrypted password when user enters Spanish characters.
731127	SSL VPN with SAML tunnel displays error that empty username is not allowed.
743106	IPsec VPN XAuth does not work with ECDSA certificates.
744544	FortiClient (Windows) always saves SAML credentials.
758424	Certificate works for IPsec VPN tunnel if put it is in current user store, but fails to work if it is in local machine.
759138	FortiSASE VPN traffic inconsistently goes through the FortiSASE tunnel when trusted traffic is enabled.
762986	If FortiClient (Windows) cannot reach the first remote gateway when connecting to a resilient tunnel from FortiTray, FortiClient does not use the second FortiGate to connect.
771090	Saving username for IPsec VPN tunnel does not work.
773060	Microsoft Surface Pro connected to VPN on wireless connection cannot access SQL Server Reporting Services report, software hosted on internal server.
790404	GUI is missing SAML button.
794110	VPN before logon does not work with Okta as multifactor authentication and disclaimer message acceptance is enforced.
794658	If the first remote gateway becomes offline with IPsec VPN resilience when VPN is up, FortiClient does not use the second FortiGate to connect to VPN.

Web Filter

Bug ID	Description
781874	Website does not load with `ERR_CONTENT_LENGTH_MISMATCH` error.
793017	Web Filter option disconnects an application's underlying connection.

Zero Trust tags

Bug ID	Description
731525	FortiClient (Windows) does not properly detect Zero Trust tag for not having antivirus up-to-date.
759235	Zero Trust Network Access Bitlocker (BL) policy is not matched despite FortiClient (Windows) having BL protection enabled.

Other

Bug ID	Description
725631	Windows 10 laptop network interfaces stay unavailable after hibernation or sleep.
749458	FortiClient (Windows) displays specific email address related to social network login using Gmail account.

Secure Networking

Hybrid Mesh Firewall

NOC Management

LAN

WAN

Unified SASE

Single Vendor SASE

Cloud Network Security

Secure Endpoint Connectivity

Web Application / API Protection

Security Operations

Security Operations Automation

Identity

Early Detection & Prevention

Secure Networking

Hybrid Mesh Firewall

NOC Management

LAN

WAN

Communication & Surveillance

Unified SASE

Single Vendor SASE

Secure Endpoint Connectivity

Cloud Network Security

Cloud-Native Security

Web Application / API Protection

Security Operations

Security Operations Automation

Endpoint

Data Protection

Identity

Email

Early Detection & Prevention

Expert Services

Edge Firewall

Orchestration & management

SD Branch

Application Delivery

Single Vendor SASE

Secure Endpoint Connectivity

Secure Private Access

Thin Edge

Identity

Application Gateway

Enterprise Asset Management

Endpoint Agent

Agentless Security Posture

Identity

Wireless

Switching

Identity

Privilege Acccess Management

Next Generation Firewall

Orchestration & management

Expert Services

All

All

Account Management

SAAS Management

SAAS Application Security

Managed Services

Platform as a service (PAAS)

Other SAAS Services

4D Pillars

Cloud

Popular Solutions

(Windows) Release Notes

Known issues

Known issues

Install and upgrade

Application Firewall

Endpoint control

GUI

Zero Trust Telemetry

Malware Protection and Sandbox

Remote Access

Web Filter

Zero Trust tags

Other

Known issues