Hello every body,
This mornng I came at work and got the information that our CRM (CRM 2011 on w2k8sp1) and Our Sharepoint (2010 no SP on w2k8sp1) could not connect to their instance anymore (separate w2k8 sp1/ sql2008r2sp1STD).
On both I had messages like this
Log Name: Application
Source: Microsoft-SharePoint Products-SharePoint Foundation
Date: 30/05/2013 07:53:42
Event ID: 5586
Task Category: Database
Level: Error
Keywords:
User: xxxxx
Computer: xyz
Description:
Unknown SQL Exception -1 occurred. Additional error information from SQL Server is included below.
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider:
SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-SharePoint Products-SharePoint Foundation" Guid="{6FB7E0CD-52E7-47DD-997A-241563931FC2}" />
<EventID>5586</EventID>
<Version>14</Version>
<Level>2</Level>
<Task>3</Task>
<Opcode>0</Opcode>
<Keywords>0x4000000000000000</Keywords>
<TimeCreated SystemTime="2013-05-30T05:53:42.388258300Z" />
<EventRecordID>2023295</EventRecordID>
<Correlation />
<Execution ProcessID="7968" ThreadID="5268" />
<Channel>Application</Channel>
<Computer>xyz</Computer>
<Security UserID="S-1-5-21-1610302052-882770473-1237804090-14172" />
</System>
<EventData>
<Data Name="int0">-1</Data>
<Data Name="string1">A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL
Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)</Data>
</EventData>
</Event>
The SQL instance were accessible from manager studio (installed on the server)
It was possible to ping but impossible to connect from an ODBC on the client (except for the default instance)
I looked this up and I followed the steps from http://blogs.msdn.com/b/sql_protocols/archive/2007/05/13/sql-network-interfaces-error-26-error-locating-server-instance-specified.aspx
Our Sharepoint and our CRM are back.
How can we prevent this from happenning again ?
Regards