Docker Core
The runtime could not launch the exec command inside the running container.
oci-runtime-exec-failedReviewed for reference consistency: August 11, 2026
The runtime could not launch the exec command inside the running container.
What oci-runtime-exec-failed Means
The oci-runtime-exec-failed error on the Docker Core indicates the runtime could not launch the exec command inside the running container.. This typically occurs due to the image intentionally omits a shell or the requested utility.
Exec into a live container asks the runtime to start an additional process inside the existing namespace. When the requested binary does not exist in the container filesystem, as with minimal distroless images lacking a shell, the runtime reports the exec failure with the not-found path detail.
How to fix oci-runtime-exec-failed
General informational guidance, not professional advice. Commands can affect your system or data — back up first and proceed at your own risk. FixerCode is an independent reference, not affiliated with any vendor mentioned.
List the image filesystem without entering
The export stream can be listed for the presence of a shell without executing anything in the container.
docker export <container> | tar -t | head -40Show the image's build history
History lists each layer's build step, revealing whether a shell was ever installed in this image lineage.
docker history <image>
Technical Background
Distroless packaging removes the shell to shrink the attack surface and the image size, which breaks the reflex of shelling into containers for inspection; the runtime's refusal is the intended outcome of that design rather than a malfunction.
The failure is scoped to the executed command: the container's own process continues running, and other exec requests for binaries that do exist still succeed.
Common Causes
- The image intentionally omits a shell or the requested utility
- The command path does not exist inside the container's filesystem
- The exec request targets a binary without execute permission
Typical Scenarios
- Opening a shell in a distroless image that ships no shell at all
- Debug commands assuming standard tools exist in a minimal runtime image
- A typo in the exec command's binary path
What to Know
The appended detail names the exact path that could not be executed, which distinguishes a missing-shell case from a plain typo in the command being requested.
Frequently Asked Questions
Common questions about Docker oci-runtime-exec-failed error
From outside: filesystem probes via export, diff against the image, log access, and image history all work without executing anything inside.
Yes. The exec failed independently; the main process and any healthy exec sessions are unaffected.
Related Error Codes
An exec or attach targeted a container whose main process is not active.
The OCI runtime refused to create the container process from its bundle.
The kernel declined the binary because it was built for another architecture.
Related Errors From Other Categories
Similar error codes documented across different platforms and systems