René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"ApexRest -- No 'Access-Control-Allow-Origin' header is present code 401","articleBody":"We have multiple orgs using ForceTK to call ApexRest services from VisualForce pages.  Everything has been working just fine until last night.  Now none of our calls are going through:\n\nXMLHttpRequest cannot load https://cs41.salesforce.com/services/apexrest/v1/productmarkets/. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://c.cs41.visual.force.com' is therefore not allowed access. The response had HTTP status code 401.\n\nWe've added the CORS records to the org with no difference in outcome.  I understand that this is more than likely not a ForceTK issue, but something that has changed on the Salesforce side.  I'm wondering if anyone might have suggestions on things I can try to get this to work?  \n","author":{"url":"https://github.com/craigisakson","@type":"Person","name":"craigisakson"},"datePublished":"2016-07-06T15:06:52.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":19},"url":"https://github.com/87/Force.com-JavaScript-REST-Toolkit/issues/87"}