Docker on Windows behind a proxy with authentication. Not able to pull images

Dear Docker-Team, I’m struggeling getting docker pull images behind a proxy on a windows machine. I allways get the ErrorMessage: “docker: Error response from daemon: Get “registry-1.docker.io/v2/”: Proxy Authentication Required.” I already configured Proxy in config file, which is located c:\Users\myUser.docker\config.json
{
“credsStore”: “desktop”,
“proxies”: {
“default”: {
“httpProxy”: “http/yyyyy:xxxxx@myproxy:81”,
“httpsProxy”: “http/yyyyy:xxxxx@myproxy:81”,
“noProxy”: “localhost, 127.0.0.0/8”
}
}
}
But still getting proxy auth failed.
I also configured the Docker Desktop App under settings with proxy and credentials.
Here are some Logs:
[2022-04-12T14:53:14.102244700Z][com.docker.backend.exe][I] (07d3e3da) e89d8cc1-BackendAPI S->C 6ebe2a5f-ProxyPKG GET /registry/access (0s): {“allowed”:[{“DNS”:"",“IP”:{“IP”:“0.0.0.0”,“Mask”:“AAAAAA==”},“Type”:1,“value”:“0.0.0.0/0”},{“DNS”:".",“IP”:{“IP”:"",“Mask”:null},“Type”:3,“value”:"."}],“enabled”:false,“refresh_after”:“2022-04-13T04:53:14.1017016+02:00”,“refresh_grace_period_ends”:“2022-04-13T16:53:14.1017016+02:00”,“refresh_grace_period_interval”:3600000000000}
[2022-04-12T14:53:14.102838100Z][com.docker.proxy.exe][I] (07d3e3da) 6ebe2a5f-ProxyPKG C<-S e89d8cc1-BackendAPI GET /registry/access (1.784ms): {“allowed”:[{“DNS”:"",“IP”:{“IP”:“0.0.0.0”,“Mask”:“AAAAAA==”},“Type”:1,“value”:“0.0.0.0/0”},{“DNS”:".",“IP”:{“IP”:"",“Mask”:null},“Type”:3,“value”:"."}],“enabled”:false,“refresh_after”:“2022-04-13T04:53:14.1017016+02:00”,“refresh_grace_period_ends”:“2022-04-13T16:53:14.1017016+02:00”,“refresh_grace_period_interval”:3600000000000}
time=“2022-04-12T14:53:14.119710206Z” level=info msg=“ethernet: Connected Ethernet interface f6:16:36:bc:f9:c6”
time=“2022-04-12T14:53:14.119710206Z” level=info msg=“udp: UDP interface connected on 192.168.65.1”
time=“2022-04-12T14:53:14.129273414Z” level=info msg="http: HTTP proxy → 10.2.25.129:81 Host:registry-1.docker.io:443 (Proxy): CONNECT "
time=“2022-04-12T14:53:14.129998207Z” level=info msg=“http: HTTP proxy → 10.2.25.129:81 Host:registry-1.docker.io:443 (Proxy): Successfully connected to 10.2.25.129:81”
time=“2022-04-12T14:53:14.129998207Z” level=info msg=“http: Outgoing.Request.write”
time=“2022-04-12T14:53:14.130559921Z” level=info msg=“http: Outgoing.Response.read”
time=“2022-04-12T14:53:14.141627073Z” level=info msg=“http: HTTP proxy ← 10.2.25.129:81 Host:registry-1.docker.io:443 (Proxy): HTTP/1.1 407 Proxy Authentication Required”
time=“2022-04-12T14:53:14.141996622Z” level=info msg=“http: HTTP proxy ← 10.2.25.129:81 Host:registry-1.docker.io:443 (Proxy): proxying body”
[2022-04-12T14:53:14.156155300Z][com.docker.proxy.exe][I] proxy << POST /v1.41/images/create?fromImage=docker%2Fgetting-started&tag=latest (55.6941ms)

I dont know what else I can do.