Created on
02-08-2017
05:03 AM
Edited on
11-13-2025
01:13 AM
By
Jean-Philippe_P
Description
Solution
Microsoft provides official OS compatibility on the following link: About VPN devices and IPsec/IKE parameters for Site-to-Site VPN Gateway connections.
In case of using older FortiOS versions (v5.2.6 or older), it is possible to experience phase2 random failures after server minutes/hours.
Related article:
Technical Tip: VPN site-to-site between a FortiGate and Microsoft Azure VPN
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