SQL SERVER – Fix: Error 946, Severity: 14 – Cannot open database ‘DB’ version 782. Upgrade the database to the latest version

I was consulting a client for migration from SQL 2014 to SQL 2016. They were using methodology discussed in books online here. https://docs.microsoft.com/en-us/sql/database-engine/availability-groups/windows/upgrading-always-on-availability-group-replica-instances?redirectedfrom=MSDN&view=sql-server-ver15 (Upgrading AlwaysOn Availability Group Replica Instances). Let us learn about how to fix error 946.

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