I keep seeing Bing in my optional updates. It gives a little information but I'm still confused. Bing Desktop sets the daily Bing photo as the desktop background and adds a floating search bar. It DOES change the background daily.. Windows 10 Pro - Start10 - part of a local network which is a '3rd party optimizer-free' zone..
2.2.4 HTTP OPTIONS Response. After receiving an HTTP OPTIONS request, a server responds with an HTTP OPTIONS response that specifies the protocol versions it supports.
In an open message, on the Message tab, in the Respond group, click Vote and then click the option that you want. The sender can see all responses in a table. On one of the response messages click the The sender responded line in the message header, then click View voting responses.