Load metadata hangs infinitely

[speller]

My Docker Desktop just stopped building anything and hanging infinitely on pulling metadata:

[+] Building 1610.3s (3/3) FINISHED
 => [internal] load build definition from Dockerfile                                                                                             0.1s
 => => transferring dockerfile: 38B                                                                                                              0.0s
 => [internal] load .dockerignore                                                                                                                0.1s
 => => transferring context: 34B                                                                                                                 0.0s
 => ERROR [internal] load metadata for docker.io/library/node:14.17.4-alpine                                                                  1610.2s
------
 > [internal] load metadata for docker.io/library/node:14.17.4-alpine:
------
failed to solve with frontend dockerfile.v0: failed to create LLB definition: rpc error: code = Unknown desc = error getting credentials - err: exit status 1, out: ``

This was cancelled by Ctrl+C after 1610 seconds of waiting. Internet is accessible, the index.docker.io domain is accessible.

• I have tried with the latest version of Docker Desktop
• I have tried disabling enabled experimental features
• I have uploaded Diagnostics
• Diagnostics ID: (I don't know how to make and upload diagnostics)

I tried to shutdown WSL but it didn't help.

• Windows Version: Microsoft Windows [Version 10.0.22000.346]
• Docker Desktop Version: 4.2.0 (70708)
• WSL2 or Hyper-V backend? WSL2
• Are you running inside a virtualized Windows e.g. on a cloud server or a VM: No

[speller]

Only system reboot helped

[EricHripko]

Observed something similar after upgrading to 4.2.0. This seems to be caused by ~/.docker/config.json, which points back to Windows for the credential store. If Docker Hub is for any reason inaccessible (e.g., is blocked or proxies are needed to access), docker CLI in WSL hangs for a long time (about 5 minutes) before doing anything. Removing ~/.docker/config.json seemed to fix the issue.

[mattwelke]

Maybe this is related to #10247? We've been tracking an issue that came up in late 2020/early 2021 where it was a 10 second delay but with it always working once the delay passed. And not helped by a reboot. Sounds like this problem is different, but since they both involve "load metadata" hanging, maybe they share a root cause.

[speller]

The issue happened on my machine again a couple of hours after rebooting the system. None of the operations that require internet connection worked: metadata load, authentication, pull command - were hanging forever. Dockerhub website is accessible:

curl  https://index.docker.io/v2/
{"errors":[{"code":"UNAUTHORIZED","message":"authentication required","detail":null}]}

The removal of the "credsStore": "desktop.exe" config from the ~/.docker/config.json helps.

[DavidBurela]

Removing ~/.docker/config.json seemed to fix the issue.

Thanks @EricHripko removing that file resolved the issue for me

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