Failure to establish ODBC connection between SAS and SQL Server

[katrina11]

Hi experts!
I am trying to establish ODBC connection between SAS 9.2 and SQL Server 2005 through Control Panel->Administration Tools->Data Sources (ODBC).
I was able to do it once in the past and it worked!!!!
30 libname mylibref ODBC
31 NOPROMPT=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX;
NOTE: Libref MYLIBREF was successfully assigned as follows:
Engine: ODBC
Physical Name: IR_SAS

******************************************************************Since that time I had lost my ODBC connection and assumed (although was not absolutely sure)that it happened after my PC had been replaced; Anyway I started the process over to re-establish it. However, tried as I might, it did not work anymore. I cannot find what is my mistake as system message in the process of re-establishing looked all right:

“Microsoft SQL Native Client Version 09.00.5000

Data Source Name: IR_SAS.dsn
Data Source Description: IR_SAS_SQL_SERVER
Server: REPORTP01
Use Integrated Security: Yes
Database: DW
Language: (Default)
Data Encryption: No
Trust Server Certificate: No
Multiple Active Result Sets(MARS): No
Mirror Server:
Translate Character Data: Yes
Log Long Running Queries: No
Log Driver Statistics: No
Use Regional Settings: No
Use ANSI Quoted Identifiers: Yes
Use ANSI Null, Paddings and Warnings: Yes”


Besides, I submitted an offered system test in a process of establishing and it looked successfully:

"Microsoft SQL Native Client Version 09.00.5000
Running connectivity tests...

Attempting connection
Connection established
Verifying option settings
Disconnecting from server

TESTS COMPLETED SUCCESSFULLY!"
******************************************************************
However, after I had ran my newly established ODBC connection through SAS, log complained for the error:

libname mylibref ODBC
NOPROMPT="UID=;PSW=;DSN=IR_SAS;SERVER=REPORTP01;DATABASE=DW;";

22 libname mylibref ODBC
23 NOPROMPT=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX;
ERROR: CLI error trying to establish connection: [Microsoft][ODBC Driver Manager] Data source
name not found and no default driver specified
ERROR: Error in the LIBNAME statement.

So far:
-I wonder where my mistake is: is it in the process of establishing connection (while the submitted test show Data source name and driver were set properly)?
-Or it is about libname statement?
-Or probably it is somewhat related to the SAS update to the license renewal process after I had establish my ODBC Connection? (I found the following statements in the SAS revision / renewal script just in case)
*PRODNUM209 = ODBC SAS/ACCESS ODBC;
..
Comp16=odbc
..
SAS/ACCESS Interface to ODBC 01FEB2011
Or both?
What is wrong and how to resolve it? I am totally lost..

Thank you in advance!

Katrin