The certificate is not trusted in all web browsers

[sriflix]

Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.

My domain is:http://www.sriflix.xyz

I ran this command:sriflix.xyz

It produced this output:https://sriflix.xyz/

My web server is (include version): don’t know

The operating system my web server runs on is (include version): Windows 10

My hosting provider, if applicable, is: Namecheap

I can log in to a root shell on my machine (yes or no, or I don’t know): no

I’m using a control panel to manage my site (no, or provide the name and version of the control panel): no

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot): don’t know

I was using let’s encrpt free ssl certification.here is the some external details which you need
Common name: www.sriflix.xyz
SANs: sriflix.xyz, www.sriflix.xyz
Valid from November 16, 2019 to February 14, 2020
Serial Number: 0348889a395c67503d0ba8093197d36f592a
Signature Algorithm: sha256WithRSAEncryption
Issuer: Let’s Encrypt Authority X3

when I check my website SSL certificate in SSLChecker website it has shown this error

The certificate is not trusted in all web browsers. You may need to install an Intermediate/chain certificate to link it to a trusted root certificate. Learn more about this error. The fastest way to fix this problem is to contact your SSL provider.

I don’t know why this occurs but I have seen what happened in different browsers are not applicable with my SSL some times it generates not secure can I know why this happens and what I can do for it?

[JuergenAuer]

Hi @sriflix

My domain is:http://www.sriflix.xyz

checking your domain your chain is incomplete - https://check-your-website.server-daten.de/?q=sriflix.xyz#connections

The intermediate certificate is missing.

Should look like

Your https is a nginx.

Share the rows of your port 443 vHost with

    ssl_certificate     www.example.com.crt;
    ssl_certificate_key www.example.com.key;

to see, what you are using. Perhaps change the value of ssl_certificate to fullchain.pem if you use cert.pem and restart your nginx.