I don't know if you can opt out that specifically or not. There are third party tools that claim to disable a lot more than MS will normally allow, but I don't put much faith in them (if for no other reason than the fact that MS can undo anything with an update)
MS took these pages down, but there were two posts that I think gave users the most in depth look at at the kinds of data they've been collecting:
This only gives examples of some of the types of things they collect though. For example, it says that the Photo App (default image viewer) will tell MS if the file was on your hard drive or a network share or a cloud server or an SD card, and it will send them the metadata (resolution, file size, encoding, etc) and tell them if you looked at the photo or video in fullscreen mode, as well as how long you spent looking at each file, but you shouldn't assume that's all the information they take. That's why the start of each section has the words "such as"
Now that they're fully committed to using their OS as an ad delivery platform they likely collect everything that they think will help them target those ads to you better.
MS took these pages down, but there were two posts that I think gave users the most in depth look at at the kinds of data they've been collecting:
https://web.archive.org/web/20170722175209/https://docs.micr...
https://web.archive.org/web/20170407072948/https://technet.m...
This only gives examples of some of the types of things they collect though. For example, it says that the Photo App (default image viewer) will tell MS if the file was on your hard drive or a network share or a cloud server or an SD card, and it will send them the metadata (resolution, file size, encoding, etc) and tell them if you looked at the photo or video in fullscreen mode, as well as how long you spent looking at each file, but you shouldn't assume that's all the information they take. That's why the start of each section has the words "such as"
Now that they're fully committed to using their OS as an ad delivery platform they likely collect everything that they think will help them target those ads to you better.