Windows does not have enough information to verify this certificate

Username Ndousa,

Error: Windows does not have enough information to verify this certificate.

I have followed all steps on the forum to complete the SSL certificate. I updated my web browser and my Windows.
But it still says “Windows does not have enough information to verify this certificate”. It says that the SSL certificate is invalid even though I followed all instructions.
When I search my website, it say it is “https” but is invalid and the website is insecure.

Windows version:

Windows version: Windows 10 Home
version: 21H1
Installed on: 8/‎13/‎2021
OS build: 19043.1165
Experience: Windows Feature Experience Pack 120.2212.3530.0