Latest Windows 10 update breaks Windows Media Player, Win32 apps in general

As spotted by Paul Thurrott, the update also breaks the seek bar in Windows Media Player when playing "specific files."

Also in the "how did that happen" category comes another bug: some Win32 programs can't be set as the default program for a given file type. So if you want certain files to always open in Notepad, for example, you're currently out of luck.