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SQL Server error code

SQL Server error 6512

SQL Server raises error 6512 at severity 16, which marks a problem with the query or data that you can correct.

Failed to initialize the Common Language Runtime (CLR) %ls with HRESULT 0x%x. You need to restart SQL Server to use CLR integration features.
Msg6512
Severity16
Group6000–6999

Source: Database Engine events and errors