Windows server 2019: Error message from daemon, missing signature key

Hello, everyone. I need your help:

When I try to type docker pull httpd within powershell on my WIndows Server 2019 Hyper-V for my class Computer Integration, it gives me this error: Error response from daemon: missing signature key. Thus, I created my own daemon.json file and restarted the service afterwards. That didn’t work at all, so I checked my version, and it turns out, I have version 17.10.0-ee-preview-3.

When I try to update Docker, it gives me the error: Cannot find path: C:\Users[…]\DockerMSFTProvider\DockerDefault_DockerSearchIndex.json because it does not exist. How do I fix this?

Check the official documenttion for currently supported installation methods of Docker CE or Mirantis Container Runtime.

There is no Docker EE anymore.