See Client Firewall Rules for an important change on March 3, 2020

Microsoft Container Registry (MCR) is the primary Registry for all Microsoft Published docker images that offers a reliable and trustworthy delivery of container images with a syndicated catalog, while maintaining the quality that customers expect from a Microsoft product offering.

The discovery experience for MCR is provided through dockerhub.

For more background on MCR:

• Microsoft syndicates container catalog (mcr.microsoft.com)
• Improved discovery experience for Microsoft containers on Docker Hub

Please open issues to provide your feedback on usage, as well as any suggestions or concerns with MCR.

• How does MCR work with Dockerhub? MCR is a public registry that houses Microsoft Published images but it does not have its own catalog UI experience. Docker Hub is the official source for our customers to discover official Microsoft-published container images. For further details of this integration please visit our blog

• What is the difference between MCR and ACR(Azure Container Registry)? MCR is a public registry for housing only Microsoft's official Container images. ACR is a private container Registry for housing Our customers container Images.

• Can I browse MCR? No, MCR does not have a UI/discovery experience, the only experience with the registry is for interacting with a container image. Ex: docker pull mcr.microsoft.com/windows/servercore:ltsc2019

• Can I Onboard new Images to MCR? No, Given that MCR is meant to host only official Microsoft Container Images, only Internal Microsoft Product teams will be able to onboard images to the registry. Once onboarded, the images are available to all public users.

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