IDM: Removing "Internet Download Manager has been registered with fake Serial Number"

If you are someone like me who hates constant pop ups from applications, then here's a way to remoe IDM's fake Serial Number alert.

Alert! Fake Serial Number!

1. Go to the folder where you installed your IDM. Usually it's in C:\Program Files (x86)\Internet Download Manager
2. Rename IDMGrHlp.exe to anything you want. Of course, it should not conflict with any other file names in the folder.
3. Rename IDMBroker.exe to IDMGrHlp.exe.

Voilà! No more annoying pop up.