If I face this error, I would do the following checks:
* In the underlying source, check if the table exists and the user performing the view creation from Denodo has necessary privileges.
* Check if the JDBC driver for the MSSQL Server “mssql-jdbc-6.2.2.jre8.jar” exists under the <Denodo_Home>/extensions/jdbc-drivers/mssql-jdbc-6.x directory.
* Also try accessing the same table using equivalent JDBC clients like DBVisualiser(using the same driver and user credentials) and verify if that works fine.
If the issue persits and if you are a user with valid support access, create a support case in [Denodo Support Site](https://support.denodo.com/) so that our support team will assist you further in resolving this issue.
Hope this helps!