I found another reference to this recurring problem some users have experienced with the original version of WIN 10 that was released.
Maybe reading through this thread will help you? But like all these things, do not just do what others' have done as your circumstances may just be different enough. Look at what they propose, check your setup and then take precautions such as creating restore points etc.
In the process I have discovered that not all users have received the option to upgrade to the win 10 Anniversary edition, mostly it seems are persons with self-built PCs.
In any event, I was very pleased to be able to dump WIN 10 10240 as soon as an alternative became available. I no longer have any PCs myself or ones that I support for other users with older versions of WIN 10 and all the PCs I maintain are running WIN 10 Pro 64 bit, version 1607.
I have a number of standard Group Policy changes I have done, mostly to handle issues of being able to control the update process better and to prevent update downloads when on certain types of connections.
This is why I do not appreciate the WIN 10 Home version, because it takes away too much control from the user. I do not understand MS's logic yet with the Home version.
Things at actually quite quiet these days on the WIN 10 front. The only perplexing problem I have not yet found the root cause for is why some PCs and laptops, will not connect to the Internet at times, and all the recommended trouble shooting guides show up nothing. And then out of the blue the connection will return of its own.