Error: "Unable to load library. ConnDB2.dll" (4341457)

Error received when trying to log into the server with Quest SQL Optimizer for DB2:

"Unable to load library. ConnDB2.dll"

1) Verify that the computer has this directory: "C:\Program Files\SQLLIB\bin".

2) Right click the "My Computer" desktop icon and select Properties | Advanced | Environment Variables.

3) In the System Variables section, highlight the Path and click "Edit".

4) Append "C:\Program Files\SQLLIB\bin" into the "Path" variable.

5) Click "OK" to accept the changes and click "OK" again to close the "Environment Variable" window.

6) Launch the SQL Optimizer application and try logging into the database.

If editing the "Environment Variable" does not help, verify the User-permissions of the user performing the install. Also check they are a member of the correct DB2 group and then un-install and re-install the DB2 client.