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Docker Login Error response from daemon <internal NEXUS domain> proxyconnect tcp: EOF

Hi All,

Quick note: First time user of Docker (our Docker guy is unavailable for testing). I’ve installed Docker Desktop for Windows. Version 19,03.8. I am receiving the below error when trying to do a Docker login to a hosted docker nexus repository.

Docker login [nexus.domain:port]
Error response from daemon: Get https://[nexus.domain:port]/v2/: proxyconnect tcp: EOF
(if I include username in command, I get:) Error response from daemon: Get https://[nexus.domain:port]/v2/: proxyconnect tcp: net/http: TLS handshake timeout

We are in a POC phase of testing the Nexus repository (Nexus Manager 3). See article on authentication:

https://help.sonatype.com/repomanager3/formats/docker-registry/authentication

–I have added our company’s root and intermediate CAs to the Windows certificate store, which Docker should be picking up (according to its documentation).
–In the Docker dashboard, under proxies, I have added our HTTP and HTTPS proxies.
–In our Nexus instance, we have the SSL certs for Nexus and our company’s proxy. Other feeds like nuget, PyPi, NPM are working.

What else can I provide that will help resolve this? Again, I’m a complete beginner here.

Thanks.