Hello, I just installed docker on my computer. Every time I run docker run hello-world (or any other container for that matter), I get the error: docker: Error response from daemon: failed to create task for container: Unimplemented: failed to start shim: start failed: unsupported shim version (3)…

How did you install Docker? Did you have containerd or other Docker version installed before? If it says the shim version is unsupported, and if 3 means it is using v3, a failed upgrade could cause the issue. I found this for example start failed: unsupported shim…

1.7 is actually the correct version usually. I don’t remember any environment where I had v2. I’m not sure what will happen when you upgrade Docker. Hopefully containerd will not be overwritten again, but if anyone sees Containerd v1.7 currently, don’t worry, that is the version that you get when yo…

Docker run Error: "unsupported shim version (3): not implemented"

Docker Engine General

skullleonheart (Skull Leonheart) September 2, 2025, 9:03pm 3

Fixed it. It seems I had installed containerd version 1.7. Upgrading it to 2.1 fixed it.

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Docker run Error: "unsupported shim version (3): not implemented"

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