As this thread still seems active - i solved the issue with the shortcut by now:

wiaacmgr.exe is the file. If you do a search you will find it somewhere in your windows folder. However, for some reason it can be accessed via a shortcut here.
So i just copy-pasted it in my C:\Windows\System32 folder.

From here you can do shortcuts as ur pleased which will get you directly to the scanning interface!