My Windows updated yesterday and it removed all my view settings for my libraries. For example, Pictures used to be medium icons, sorted by date modified, and grouped by nothing. I changed it back to that, but every single subfolder is still set to the default.

I tried going to the folder settings, view, and clicking "apply to folders", but the button is grayed out. I then deleted all Bags/BagsMRU registry entries in hope of fixing it, but no dice.

I don't remember having to do anything special for this back when I got Windows 10, so I think something got messed up in this update for me.

Please note that I can use "apply to folders" when I'm outside of my library and it works fine. I successfully applied the correct settings to entire folder trees, but it doesn't work for the libraries.