Microsoft are making some changes to the Microsoft 365 login experience. Beginning December 10, 2018, login pages will begin loading resources from new Content Delivery Networks (CDN) domains.
This applies only to Microsoft 365 organizations that are currently using whitelists to filter CDN’s. If you are not filtering network traffic, you can disregard this changes.
If your organization manages connections via defined CDN’s and you do not add the new domains to your whitelist, login pages might not load correctly for your users.
Ensure that the following new domains are accessible from within your organization’s network:
Please click here to learn more.
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Tags: Microsoft, Office 365