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SQL Server 2012: Error Locating Server/Instance Specified - Can log onto Instance on Server using Windows auth, but not from my dev box

Posted on 2013-05-15
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Last Modified: 2013-05-15
Hi,

I'm having a bit of an issue connecting to a SQL Server from my management console.  I can remote desktop onto the server and log onto sql server via the management console on that server, however when I attempt to log onto it via my development box, I receive the error:

SQL Network Interfaces: error 26:- error locating server/instance specified

I am attempting to connect to <server>\SQLEXPRESS - If I remove \SQLEXPRESS I get the named pipes error

Any ideas?  thanks
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Question by:krapvag
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MattSQL earned 500 total points
ID: 39167494
Is the SQL Browser service running?

Is there a firewall involved? If there is - you'll need to open an incoming port rule for UDP 1434.

Can you verify that the SQL instance is configured to accept remote connections?

Open SQL Server configuration manager and check the SQL Server network protocols - is TCP/IP enabled?

Instead of <server name>\SQLEXPRESS what happens if you use <IP address>\SQLEXPRESS?
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Author Comment

by:krapvag
ID: 39167509
Hi, thanks for your time

SQL Server browser running

Don't think there's a firewall issue

It is accepting remote connections

Named Client seems to have TCP/IP enabled, but not Express

No difference between IP and server name
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Author Comment

by:krapvag
ID: 39167523
wait a minute, I've enabled TCP/IP for the SQL Express in Configuration Manager and this seems to have resolved it.

Thanks
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Author Closing Comment

by:krapvag
ID: 39167524
thanks for the list of possibilities to work through
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