We have been encountering the same problems with Chrome on some Microsoft sites, especially on Windows Store and Xbox Store URL links. Instead of showing those pages, we got an "This site can't be reached" error.
Just clear our the cookies in the Chrome browser, and the Microsoft sites that were not coming up should return. If you are using Chrome and are encountering these issues, here's how to clear the browser of its cookies. Be aware this will also purge the browser of all your stored passwords as well.
Go to "Settings" in the menu
Click on "Show Advanced Settings"
Scroll down and then click on "Privacy"
Click on "Content Settings"
Click on "All cookies and site data"
Finally, click on "Remove All" to purge your Chrome cookies
So far, there's no explanation on why some Chrome users have been unable to go to certain Microsoft sites, but this procedure should solve the problem for most folks.
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