The only suggestions I'm seeing are regarding adding exceptions to Windows Security... I've added the processes DynDOLODx64.exe and TexGenx64.exe as well as the entire DynDOLOD directory to the exclusion list, as well as turning off Real-Time Protection altogether and I still see the same error. Not sure what else to try.
Last time I tried using dyndolod was last November and it worked, so it's either a messed up mod (but i've cleaned everything indicated in LOOT) or a Windows update that's broken something. Not sure what exactly it could be but I'm out of ideas to fix it...