Sometimes, customer faced the issue that display "The device contains one or more certificates that will expire in less than 30 days" error message at Certificate column on Configure page.
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The message is also output when the Standby device is Down and the certificates held by the Edge are less than those expected in an HA configuration.
If the standby device down is not expected, reboot the standby device by unplugging and plugging in the power supply, so if the Standby unit is restored, customer can get minimum data set and inquery the down reason to technical support