The Time & Lang has always been a bit wonky in Win10
neither update option was turned on by default, then adjust automatically was turned on by default - I'm not sure if DST was ever turned on by default, but it is active on my machine.
The time server always seems to complain that the service is not running, it is. A manual time sync works.
Maybe MS was waiting to see what happened on a time change before releasing the next build (< 52 hours !!!!!)
I have .NET 4.6 active in Pgm & Feat -> Windows Features
Side note: I de-selected all of the languages I will probably never use - the IME section automatically reflects changes you make to the language section.
3rd party pgms might still install all language support
My PC clock is always messed up whenever I switch boot drives (different OSes).
I have the same issue with my internet browser. It's saying something about "not synced". I figured it was the DST issue. I just reloaded it and it was fine.