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Former Member
Sep 12, 2007 at 02:05 PM

The prelogin packet used to open the connection is structurally invalid

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Hi Experts

We are using CRM 5.0 on MSSQL:2005 database.when we are checking the database logs we are getting following error information

"2007-09-12 18:08:54.52 Logon Error: 17828, Severity: 20, State: 3.

2007-09-12 18:08:54.52 Logon The prelogin packet used to open the

connection is structurally invalid; the connection has been closed. Please

contact the vendor of the client library".

How ever we are able to login to the server management studio with the user SA and able to take the backups.

Please suggest why we get such kind error and how to solve the issue

Thanks

kovela