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Critical issue | FortiGate ON-Prem lost Serial Number after upgrade from 7.4.8 to 7.4.10

01-27-2026
EnvironmentPlatform: FortiGate (hardware appliance)HA mode: Active / PassiveFortiOS current version: 7.4.8Target version: 7.4.10HA priorities:Unit A (Master): priority 200Unit B (Slave): priority 100Expected upgrade behavior (normal case)Based on For...
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