After upgrading System Center Orchestrator from 2012 R2 to 2016 CU4 or 1801, you may get the following error message:
Could Not Connect To The Specified Database Server
The Server Threw an Exception
The Runbook Management Server and the Database Server are no longer linked. First, you must install Microsoft® SQL Server® 2012 Native Client – QFE: https://www.microsoft.com/en-us/download/details.aspx?id=50402
Then you must take a look at your database security permissions and check if the Orchestrator Service Account still has full access on the DB. If not, then add your service account. Now, you can open the Runbook console and confirm if the error disappears.
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