FortiClient 7.4.3 version mismatch

[DHammond]

The version the publisher wants for 7.4.3 is wrong:

FortiClient VPN 7.4.3.8758 Rev1 (this is actually a hotfix 1.8758 release from prior to March)

When the actual current version (March Release) for the VPN only is:

FortiClient VPN 7.4.3.4726


You can also see this stated here
https://www.reddit.com/r/fortinet/comments/1t4hqe1/forticlient_vpn_743_build_numbers_not_making/

[Priscilla (Patch My PC)]

Hi DHammond,

Unfortunately, we are unable to support the lower version (7.4.3.4726) at this time due to the following factors:

Applicability detection will not work in this scenario as the "Newer" version uses a lesser version number.

• Installing an older build over a newer one is ineffective. Even when the EXE installer runs and updates the version number in ARP, the actual program files are not downgraded.
• The MSI installer fails entirely because both versions share the same ProductCode, preventing proper installation or rollback.
• Uninstalling existing versions with a pre-script is also risky, as it can wipe configuration files that customers rely on.

Given these limitations, our best option is to wait (and hope) that the next release is higher than 7.4.3.8758, which is the latest version currently available our catalog.

We will keep monitoring this product release cycle and will offer the next version as long as the version numbers allow it. Apologies that we're unable to get this one out.

[JC-WH]

the "Newer" version uses a lesser version number

It doesn't, though.  The one that PMPC has tagged as build 8758 seems to probably be build 1790.  As far as I can tell, there is no such build as 8758.  That was just a hotfix ID/build of some sort.  The full version of the only Forticlient VPN installer I can find that has "8758" anywhere in the version number is 7.4.3.1790.1.8758.

Conversely, the 7.4.3.4726 version referenced by OP has a higher build number.

The most current version appears to be build 6002 at this point.  Version 7.4.3.6002, dated 2026-09-29.  SHA1: 092CE36E2134408A8E79FF135E0E11BA11890D2F

VT link: https://www.virustotal.com/gui/file/ff73b736ba7172b1c725c26f130b796a8f72e3fd5b2b1ea01c223ac7fcb7e032/details