After firmware upgrade from v.19 to v.20, HA failed to work and currently we are running on one FW.
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Important note about SSL VPN compatibility for 20.0 MR1 with EoL SFOS versions and UTM9 OS. Learn more in the release notes.
Please check details on System services > High availability under High availability status.
Try the link to troubleshoot HA :
Regards
"Sophos Partner: Networkkings Pvt Ltd".
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