Fortigate 101F to HA out of Sync

Forum|Forum|3 months ago
February 27, 2026
1 reply
472 views

Hi everyone,

Quick question: today we installed on an existing firewall a FortiGate FGT101F running firmware v7.4.8 build2795 (Mature), in NAT mode.

The issue is that it always stays “Out of sync” — it looks like synchronization never actually starts. It’s odd because I followed the guide step by step, and I also performed a factory reset, but nothing changed: it still remains Out of sync.

What’s even stranger is that with another customer, on a similar setup, the sync started immediately.

Any ideas on what this could depend on, or has anyone run into this before? Thanks!

Toshi_Esumi

SuperUser

Have you checked what part of the config is failing to sync?
https://docs.fortinet.com/document/fortigate/7.6.6/administration-guide/63913/check-ha-synchronization-status

Toshi

Tannu1986Author

Explorer II

Thanks, Toshi, but the documentation has already been viewed. But it's still out of sync.
I don't want it to be a very expensive configuration issue, like BGP, lots of policies, etc., that's weighing this down.
But thanks, but I've already done these steps as per the link.

Giuseppe

Toshi_Esumi

SuperUser

Then, you already know what part of config is causing out-of-sync, right? Where is it? Is it wireless-contraller wtp? Or somewhere else?
If wireless-controller wtp, there is a reason not to sync when ilegit CAPWAP attempts cause that part of config not to be able to sync. That's why I asked.

Toshi

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