The Windows Store appears to be down. We've received reports from readers and have confirmed the issue ourselves. You're not alone, folks. Unfortunately, we've not yet obtained word from Microsoft as to why the app store is currently offline, which could be a temporary issue or due to maintenance.
We'll be sure to keep you all updated as to when the store comes back online.
Update: We're now able to access the Store on a variety of devices and platforms. Crisis is now over!
Thanks to everyone who tipped us!