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After upgrading to the newest version of windows (windows 10 build 10586) I am no longer able to connect to a remote sql server by ip address.

Here is the error I see:

[SqlException (0x80131904): Connection Timeout Expired. The timeout period elapsed while attempting to consume the pre-login handshake acknowledgement. This could be because the pre-login handshake failed or the server was unable to respond back in time. The duration spent while attempting to connect to this server was - [Pre-Login] initialization=18303; handshake=14385; ]

This is not a named instance of sql server. I am able to connect without an issue if i use the hostname of the machine. What could cause this?

On Windows 10 before the November update there was no problem connecting.

Sql Server 2012 (11.0.5058) Windows 10 Build 10586

  • Any time I see something that acts differently with a name and an IP address, I assume authentication/kerberos issues. I don't know enough about sql to help though. – Basil Nov 19 '15 at 16:26
  • Are you sure hostname resolves to that ip address and not to some other maybe internal or ipv6 ip? – Dan Nov 20 '15 at 18:58
  • yeah, to be sure i disabled ipv6 on all network interfaces on my machine. same issue. – John Boker Nov 25 '15 at 15:24

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