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There will normally be a delay between clicking the connect button and receiving the error message if it is connectivity issue rather than an authentication issue. This is because in the case of an authentication issue, the connection is made immediately but the server refuses login, whilst in the case of a connectivity issue the SQL Management Studio will try over and over to connect for around 15-30 seconds before giving up and reporting the error.

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SQLNativeClient SQLNativeClient

SQL Native Client Version

If you are able to connect using the credentials with SQL Management Studio, and Jiwa the application is able to connect but generating reports produces the "Logon Failed" error - then the problem is the SQL Native Client has been removed from the machine, or the SQL Native client version is no longer the version Jiwa expects.

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