Hi @Mikhail Firsov ,
Q1: Why is the WSFC option is missing if it "Applies to all supported versions of SQL Server."
This is abnormal. First, you need to have a healthy cluster. Second, you need to disable AlwaysOn feature in SQLServer Configuration Manager and enable it again.
Q2: Why does the wizard "say" this replica can only use manual failover if there's no such restriction for the basic groups as described here: ?
This is because the type you chose is not a cluster, so it will not support automatic failover. In my environment, selecting the cluster type brings up the option for automatic failover. Selecting the None type brings up the Manual like you screenshot.
Best regards,
Seeya
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