2023-01-03

docker-credential-desktop.exe: Invalid argument

While WSL works great most of the time, sometimes things break and life is not as smooth as with a real Linux system. Out of the blue (maybe related to a Docker Desktop update?) I was no longer able to log into a custom docker registry:

$ docker login custom.docker.registry
Username: foo
Password:
docker-credential-desktop.exe: Invalid argument

Turns out that there was an outdated credsStore entry in ~/.docker/config.json.

{
  "auths": {
    "custom.docker.registry": {}
  },
  "credsStore": "desktop.exe"
}

Deleting the file resolved this issue.