The machine executor boots a VM from a named image (e.g. ubuntu-2204:current). An invalid or retired image tag, or a momentary provisioning hiccup, prevents the VM from starting.
What this error means
The job fails before steps run, reporting that the specified machine image is not found or is no longer available.
circleci
The machine image "ubuntu-2004:202010-01" is not available or has beendeprecated. Choose a supported image tag for the machine executor.
Common causes
Deprecated or removed image tag
Older machine image tags are retired over time.
Typo in the image name
A misspelled image or tag does not resolve to a real machine image.
Transient provisioning failure
A momentary VM provisioning issue can surface as an image fetch failure.