NAV 2013 NAV 2013 R2 Upgrade Error - Data Source name not found and no default drivers specified.

Hi all,

I am in process of upgrading a database from NAV 2009 SP1 to NAV 2013 R2 in one step. Earlier the One Step was not working for me but i hope this time i will be able to complete it. Keeping my finger crossed.

During upgrade step 1 i faced a issue that i would like to share with you all. After Step 1 of Data Migration when i tried to open the database in NAV 2013.

NAV 2013 gave me below error -

Error: [Microsoft][ODBC Driver Manager] Data Source name not found and no default driver specified. State ID: IM002

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