How to Fix the Error: "Library dbcapi.dll Cannot be Loaded"

Background:

TWS users may receive the following error message upon configuring TWS to use the eSignal data feed:

This error may appear for the following reasons:

On certain systems you will need to apply the fixes for both issue A and B. If you applied the fix for issue A (or if you are already sure you are using the 32 bit version of both platforms) and you are still receiving the error message, then please apply as well the fix for issue B.