401 unauthorized

Endpoint Central support and community,

I am experiencing interesting issue that agents in a remote office cannot establish a connection with the endpoint central server in a central office.

Server is 10.1.2228.20 on a Windows server. Clients runs 10.1.2228.20.W on Windows server 2019.x

I have confirmed these:

* agents can telnet port 8383, 8027 and 8443 on the server

* agents can access https://serverName:8383 in a local browser without any SSL warnings. However, there will be a SSL warning to access https://serverIP:8383.

* agent software package is the latest one downloaded from https://serverName:8383.

The troubleshooting tool did not give much information:

The remote server returned an error: (401) Unauthorized.

In the client log, I found this:

Failed to download the meta-data.xml from server machine 10.10.10.160 with error Code 401

In the server log, I found:

nginx_error.log:2023/02/24 09:03:48 [error] 11128#2552: *326488 user "1": password mismatch, client: 10.20.20.109, server: serverName, request: "GET /client-data/dsDummyFile.xml HTTP/1.1", host: "10.10.10.160:8383"

Can someone please share your thoughts?

Thanks!

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