I am having the exact same problem, trying to reload data from a MS SQL database server:
Connector connect error: SQL##f - SqlState: IM003, ErrorCode: 160, ErrorMsg: Specified driver could not be loaded due to system error 126: The specified module could not be found. (Qlik-mssql, C:\Program Files\Common Files\Qlik\Custom Data\QvOdbcConnectorPackage\SimbaMSSQL\lib\SQLServerODBC_sb64.dll).
I want to connect my app to a database. I create a connection (ODBC). I set server, port, database, user name and password. I have worked in this way before and was fine. I really don't know what happened now! I get this error when I press "Load data".