SQL Server v.Next (Denali) : Troubleshooting Error 18456

Posted by AaronBertrand on SQL Blog See other posts from SQL Blog or by AaronBertrand
Published on Fri, 14 Jan 2011 22:00:00 GMT Indexed on 2011/01/14 23:57 UTC
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18456

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Contained databases

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Denali

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login failed

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login failures

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SQL 11

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SQL Server 11

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SQL Server 2011

I think we've all dealt with error 18456, whether it be an application unable to access SQL Server, credentials changing over time, or a user who can't type a password correctly. The trick to troubleshooting this error number is that the error message returned to the client or application trying to connect is intentionally vague (the error message is similar for most errors, and the state is always 1). In a few cases, some additional information is included, but for the most part several of these...(read more)

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