Thank you Microsoft for breaking printing yet again with patching and forcing me to push out a registry key globally to turn that crap off and restore printing services globally.
I just love coming into a Monday after all prod print servers are patched and 2000 users reporting "omg I can't print!"
On the up side though, though I have to turn that mitigation off, we have another product that prevents the printnightmare and mshtml explotations. So we be safe :) milti layer defenses!