Under DOS I deleted Mpr.dll because of safety reasons/CPU economy and most apps are still fine if not much better without it.
However, I have one network-enabled app (not by MS) that does require Mpr.dll and I put this .dll in the same folder as the app requiring it.
The app now runs fine but when I close the app, Windoze crashes and I need to reboot because the Mpr.dll that is not in C:\Windows\System is making a superfuluous api call to a relative path.
Is there a patched / reversed version available of MPR.dll that does not make this Api call ?

Just go in and change the path or eliminate the call yourself. NOP out the call and the stuff that gets pushed onto the stack, and push the result you want onto the stack.

I once saw a nifty tool at :
http://protools.cjb.net/
that could do that but I forgot which one of all the tools they have.

CccT