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ePolicy Orchestrator 5.10.0 Update 2 Fails to Connect to SQL Server

While attempting to apply ePolicy Orchestrator 5.10.0 Update 2, the process is stopped at the point of connecting the the ePO database on SQL Server 2012. "Failed to connect to database" is the result.

ePO-Update-Fail.png

The credentials and port have been checked and tested and verified as correct.

At the SQL Server, I see a pair of events for each of these attempts. They are...

Date: 12/11/2018 5:02:13 PM
Log: SQL Server (Current - 12/11/2018 4:54:00 PM)
Source: Logon
Message: Error: 17828, Severity: 20, State: 3.

Date: 12/11/2018 5:02:13 PM
Log: SQL Server (Current - 12/11/2018 4:54:00 PM)
Source: Logon
Message: The prelogin packet used to open the connection is structurally invalid; the connection has been closed. Please contact the vendor of the client library. [CLIENT: 192.168.xx.xx]

"prelogin packet used to open the connection is structurally invalid" Is there some fix for this?

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