Bethesda tried to update FO4

I run 1.10.163, and always launch FO4 through F4SE, have for probably 2 years. In FO4, I have it set to update only if I launch through steam. Today when I launched with F4SE, Bethesda tried to update it to the latest version anyway. WTF? They couldn't, instead giving me an error code saying "appmanifest_377160 was not available" or something along those lines. Setting properties on that file to "READ ONLY" awhile ago really saved my install.