Critical warning from Microsoft: .NET install domains changing

Users who expected to be able to use the resources of the Azure content delivery network (CDN) from Edgio until November 2025, as previously announced, had a not-so-festive “gift” this week – the CDN is now shutting down on Jan. 15, 2025.

In a post on Github, Rich Lander, principal program manager, .NET core at Microsoft, offered more detail. “Some .NET binaries and installers are hosted on Azure Content Delivery Network (CDN) domains that end in .azureedge.net. These domains are hosted by edg.io, which will soon cease operations due to bankruptcy. We are required to migrate to a new CDN and will be using new domains going forward. It is possible that .azureedge.net domains will have downtime or become permanently unavailable,” he wrote.

“Azure DevOps and GitHub Actions installation tools are dependent on some of these resources,” he added. ”We are working directly with those teams to maintain continuity of service. They are moving to the new domains at best speed.”

However, he warned, “there is a chance that the Edgio CDN services will be terminated before we, our partners, and our users have a chance to adapt to the proposed changes in a staged and safe manner. If that happens, we will change existing scripts and links to use the new URLs and CDN immediately. That approach would maintain service for the bulk of users but might break users with firewall rules.”

Edgio filed for Chapter 11 relief in September, in preparation for the sale of some assets that, it said in a press release, “should allow for the continued operation of the Company’s business under new ownership.”

In November, Akamai was revealed as the winning bidder for “select assets” in a bankruptcy auction. The deal closed in December, and, Microsoft said in its FAQ about the shutdown, “Microsoft was informed that the Edgio platform will end service on Jan. 15, 2025.”

There is no wiggle room in that date, nor is there any in the intermediate dates for locking of profiles (Jan. 3) and blocking an automatic migration to Azure Front Door (Jan. 6). Microsoft recommended that customers complete their migration off the Azure CDN from Edgio platform by Jan. 7, 2025, to avoid service disruptions.

However, it said, “If you have any services running on Azure CDN from Edgio on Jan. 7, 2025 and haven’t informed us of your plans … we’ll attempt to migrate your services over to Azure Front Door on Jan. 7, 2025. We’ll be performing this migration to Azure Front Door on a ‘best effort’ basis, and doing so might cause issues related to the billing, features, availability, and/or performance you’re currently consuming with Azure CDN from Edgio.”

In other words, it’s best to do your homework and deal with the migration off Azure CDN from Edgio to another platform yourself to avoid problems. Microsoft has already posted guidance on how to go about it.