I am well aware of the issue and recommendation from Eset documentation, what I am asking is that this protection is part of the Exchange 2016, it is malware engine on transport level but you can disable it. We have Windows 2012 so of course there was no need to uninstall WDF like you suggested. Do not know if you own exchange server, my doubt in all of this is did I need that part of Microsoft antimalware if I own eset protection for exchange. Dose it work/help eset to function properly or is it just another layer of security and eset is the main protection on all layers, because it seems to me that i dont need it ?