MobiControl with nginx as a reverse proxy

mdm.conf

server {
    server_name mdm.example.com;
    root "/usr/home/mc/www/public";
    # return 301 https://$host$request_uri;
}

server {
    # listen 443 ssl http2 accept_filter=dataready;
    listen [::]:443 ssl http2;
    listen 443 ssl http2;

    server_name mdm.example.com;

    charset utf-8;

    location = /favicon.ico { access_log off; log_not_found off; }
    location = /robots.txt  { access_log off; log_not_found off; }

    location / {
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-Host $host;
         proxy_set_header X-Forwarded-Server $host;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header X-Forwarded-Proto $scheme;

         proxy_http_version 1.1;

         proxy_set_header Host $host;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection $connection_upgrade;

         proxy_read_timeout 600s;

         proxy_redirect https://mdm-01.example.local/ https://$host/;

         proxy_pass https://mdm-01.example.local/;
         

         access_log          /var/log/nginx/mdm-access.log;
         error_log           /var/log/nginx/mdm-error.log;
    }
    
    location ~ /\.ht {
        deny all;
    }

    ssl_ciphers 'ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS';

    ssl_prefer_server_ciphers on;

    ssl_session_cache    shared:SSL:100m;
    ssl_session_timeout 1d;
    ssl_session_tickets off;

    ssl_stapling on;
    ssl_stapling_verify on;

    ssl_certificate     /usr/local/etc/letsencrypt/live/mdm.example.com/fullchain.pem;
    ssl_certificate_key /usr/local/etc/letsencrypt/live/mdm.example.com/privkey.pem;
    add_header Strict-Transport-Security "max-age=16070400; includeSubdomains";
}

nginx.conf

user  www;
worker_processes  4;

error_log  /var/log/nginx/error.log;
pid        /var/run/nginx.pid;

events {
    worker_connections  4096;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    types_hash_max_size 2048;
    # server_tokens off;
    server_names_hash_bucket_size 64;
    large_client_header_buffers 4 8k;

    client_max_body_size 20M;

    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout  65;

    gzip  on;
    gzip_disable "msie6";

    # Update your allowed TLS versions here
    ssl_protocols TLSv1.1 TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers on;

    map $http_upgrade $connection_upgrade {
        default upgrade;
        '' close;
    }

    include /usr/local/etc/nginx/vhosts/*.conf;
}

This is great help but I'm having issues with windows modern not finishing enrollment, it appears to be related to windows getting a forbidden error while trying to connect to its assigned Management server address... ie. "https://my.server.here/DeviceManagement.svc/WindowsDesktop/Windows%2010%20RS1/sequenciallyGeneratedNumber. wondering if you can be of any assistance