Connecting Word 2016 to a WordPress Blog is suprisingly easy. It allows you to create your blogpost in Word, insert your pictures etc and then press the publish button and your post will published with all of your images uploaded to your blog site. It's a pretty handy feature if you prefer to use Word for blogging as opposed to something like Windows Live Writer or the updated open sourced version called Open Live Writer.
Below is a step by step guide of how I connected Word 2016 to my WordPress Blog.
Start by opening Word 2016, and clicking on the Blog Post template.
You will then be greeted with the Register a Blog Account wizard. Select Register Now.
Select WordPress and then click Next.
Populate the Blog Post URL with your blog URL. Make sure to leave the xmlrpc.php appended to the end of your URL. By default XML-RPC functionality is turned on by default since WordPress 3.5. In earlier version the user needed to turn it on in the blog settings.
Fill out your Username and Password and then select Picture Options.
Select the Picture Provider that is relevant for your site. For my site I'll pick My Blog Provider.
Click Yes. (Maybe not such a good idea if you are on public wifi, because if someone is sniffing packets they will get they username and password you are using to authenticate. Here is a link to an article about using Https and SSL To connect to WordPress)
Click OK.
Now that it's all connected. Submit a test post to check if everything is working OK.
Note: You can even set the category of the post by selecting Insert Category. A drop down list of all the categories you have specified on your blog will be shown.
Once you would like to send the post to your blog select Publish as Draft. Otherwise, your article will be posted.
If everything goes smoothly, you should get a confirmation that the post was published.
Log into your blog and you should see the post you have created.
That's all there is to it. Hope this helps.