User logon failure, the user is not associated with a trusted SQL Server connection, error: 18452

Source: Internet
Author: User

Sometimes this happens when you install SQLServer2005 (or the SQLServer2005 that comes with Visual Studio 2008) with SQL Server authentication:



The reason for this error is that when you install SQL Server, the logon method is restricted to Windows authentication, so the login error when using a specific user login, the workaround is:

1. Right-click the properties of the login server after using Windows authentication.

2. Select "Security" to set ' Server Authentication ' to: SQL Server and Windows Authentication mode.

3. Restart the service, ok!

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