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damianhlozano
damianhlozano
Explorer II
November 26, 2025
Solved

Fortigate - FortiClient - Client OS, How to check compatibility?

  • November 26, 2025
  • 2 replies
  • 3317 views

Hello team!!

 

I need to know compatibility between FortiOS (Fortigate) and FortiClient, and between FortiClient and Client OS versions.

For example, I need to know for an specific OS version (Windows, Linux, and Mac OS), which is the last FortiClient that supports this OS.  And also, I need to know, for this FortiClient Version, which is the last FortiOS supporting this.

I found some old compatibility matrix, but this didnt help me.

Which is the correct way to find out this?

Do I need to read the release notes?  FortiOS or FortiClient release notes?

In which section do I find the compatibility?

 

Thanks in advance.

Regards,

Damián

2 replies

funkylicious
SuperUser
funkyliciousAnswer
SuperUser
November 26, 2025

for OS supported by FortiClient ( free/VPN-only ) you would need to read the release notes for it, e.g. https://docs.fortinet.com/document/forticlient/7.2.12/windows-release-notes/549781/product-integration-and-support

if managed by EMS - https://fortinetweb.s3.amazonaws.com/docs.fortinet.com/v2/attachments/afec3249-ed3f-11ea-96b9-00505692583a/FortiClient_ems-compatibility-matrix.pdf 

"jack of all trades, master of none"
damianhlozano
damianhlozanoAuthor
Explorer II
November 26, 2025

Hello Funkylicious!

Thanks for your answer!

Ok, I find this:

* In your link, select the major version 

* I go to "FortiClient Release Notes" and select the specific version

* Clic on the OS 

* Clic on "Product integration and support"

* There I could find FortiOS Version supported and OS Versions supported for this FortiClient version

 

This is useful to me!

Now, I wonder if new FortiOS versions are being added in all old the release notes.

For example, for FortiClient 7.4.2, FortiOS 7.6.0 does not appear as compatible for SSL/IPsec VPNs, but I am almost sure that FortiClient 7.4.2 can connect to ForiOS 7.6.4 VPNs.

Is there an explanation?

 

Regards,

Damián

 

funkylicious
SuperUser
funkylicious
SuperUser
November 26, 2025

starting w/ FortiOS 7.6.3 SSLVPN is removed/obsolete and cannot be used, https://docs.fortinet.com/document/fortigate/7.6.4/fortios-release-notes/173430/ssl-vpn-tunnel-mode-replaced-with-ipsec-vpn 

compatibility between FortiClient and FortiOS for IPsec/SSLVPN should not be a real issue

what you should watch for is compatibility between FCT and OS and know issues in FCT ( FortiClient ) and resolved ones.

"jack of all trades, master of none"
yderek
Staff
yderek
Staff
November 26, 2025

In general speaking unless particular issue or problem be found in FortiClient version, otherwise, no need to worry too much between FortiClient and FortiGate version , however after 7.4.4 FortiClient has no more VPN client avaiable and since the SSLVPN has removed from FortiGate as @funkylicious  mentioned 

If you are looking for dialup IPsec with FortiGate 7.6.x you might consider of 7.2.12 FortiClient version

For Client OS unless there is ARM based or MAC, in general windows FortiClient any version should working fine 

damianhlozano
damianhlozanoAuthor
Explorer II
November 27, 2025

Thank you both!!!

I dont understand this:

after 7.4.4 FortiClient has no more VPN client avaiable

 

I allways used ipsec, so I dont care about SSL support, but I think even FC 7.4.4 is a VPN Client, and a kind of agent to connect to EMS in the ZTNA version

 

Regards,

Damián

funkylicious
SuperUser
funkylicious
SuperUser
November 27, 2025

have a look at @Debbie_FTNT 's article that was just posted, https://community.fortinet.com/t5/FortiGate/Technical-Tip-Overview-of-compatible-IKE-versions-user/ta-p/420733 

"jack of all trades, master of none"
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