My windows system has already imported the nginx certificate, why is it still unsafe?

[ghost]

Asking for help

I used cfssl to generate an nginx certificate as follows:

tee ca-csr.json <<- "EOF"
{
  "CN": "cfssl",
  "hosts": [
    "10.17.38.191"
  ],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "US",
      "ST": "California",
      "L": "San Francisco",
      "O": "cfssl",
      "OU": "devops"
    }
  ]
}
EOF

cfssl gencert -initca ca-csr.json | cfssljson -bare ca

tee ca-config.json <<- "EOF"
{
  "signing": {
    "default": {
      "expiry": "8760h"
    },
    "profiles": {
      "nginx": {
        "usages": [
          "signing",
          "key encipherment",
          "server auth",
          "client auth"
        ],
        "expiry": "8760h"
      }
    }
  }
}
EOF

tee nginx-csr.json <<- "EOF"
{
  "CN": "10.17.38.191",
  "hosts": [
    "10.17.38.191"
  ],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
       "C": "CN",
       "ST": "Beijing",
       "L": "Beijing",
       "O": "nginx",
       "OU": "devops"
     }
  ]
}
EOF


cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=nginx nginx-csr.json | cfssljson -bare nginx