A connection was successfully established with the server, but then an error occurred during the login process. (Error Number: 233)

Question

I am having error while connecting to SQL Server:

Details in Stack Trace are:

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Cannot connect to ServerN         


        

Answer 1

You can also get this error, somewhat unhelpfully, if the database name specified in the connection string doesn't exist. Check your Db Name carefully!

Answer 2

SQL 2016 solution/workaround here (could also work in earlier versions). This may not work or be appropriate in every situation, but I resolved the error by granting my database user read/write schema ownership as follows in SSMS:

Database > Security > Users > User > Properties > Owned Schemas > check db_datareader and db_datawriter.