The article has a link to the MS thread about the problem and there are a lot of comments in the thread about other problems with AU.
http://www.pcworld.com/article/31072...tml#tk.rss_all

Have you encountered problems with your computer freezing upon logging in since you installed the Windows 10 Anniversary Update? If so, you’re not alone. And while there’s no proper fix for the issue yet, Microsoft is aware of the problem and is addressing it.