Cesium w/ chrome stopped working this afternoon

I’ve been doing lots of development and BAM - cesium stopped working around 4PM this afternoon. Even the basic demo on the cesium front page stopped working. I can run it in IE but not chrome. It pukes about not being able to load tiles:

http://ecn.t0.tiles.virtualearth.net/tiles/a0.jpeg?g=4897 Failed to load resource: net::ERR_FAILED

Cesium.js:423 An error occurred in “g”: Failed to obtain image tile X: 0 Y: 0 Level: 0.

I can switch to other imagery providers with the button or programmatically and those load.

Has anyone seen this?

I reinstalled chrome - no luck. Upgraded from 1.16 to 1.17 - no luck. Went back to early versions of my code - no luck - which is why I tried the basic demos on the site - no luck.

This link works fine with me : http://cesiumjs.org/releases/1.17/Apps/HelloWorld.html
Using Chrome Version 47.0.2526.111 m (64-bit) on windows 8.