Introduction

An error occurred while trying to verify the first certificate. This indicates that your system may not be able to connect securely to the server, or the server may not have a valid SSL certificate.

There are a few things you can do to resolve this error:

-Check your system’s clock and make sure it is set correctly. If the clock is off by more than a few minutes, you will get this error.
-Update your root certificates. This can usually be done through your operating system’s update manager.
-If you are using an older version of Windows, you may need to install the most recent version of the Microsoft Root Certificate Authority Bundle.
-If you are using an older version of OpenSSL, you may need to upgrade to a newer version.

What is an SSL Certificate Error?

An SSL certificate error occurs when your web browser is unable to establish a secure connection with the site you are visiting. This usually happens because the site’s SSL certificate is either expired, self-signed, or not from a trusted issuer.

If you see an SSL certificate error, it means that your web browser is trying to connect to the site using a secure (https) connection, but is unable to verify the site’s SSL certificate. This can happen for a number of reasons, but most often it is because the site’s SSL certificate has either expired or is not from a trusted issuer.

If you are seeing this error, you can try one of the following:

• contact the site owner and ask them to update their SSL certificate
• use a different web browser that supports https connections
• temporarily disable security features in your web browser
  How to Fix an SSL Certificate Error

If you’re trying to access a website and seeing an error message that says “error unable to verify the first certificate,” it means that there is a problem with the SSL certificate for that site. This can be caused by a number of things, but most often it’s simply because the site’s SSL certificate has expired.

To fix this problem, you’ll need to contact the website owner and ask them to renew their SSL certificate. Once they’ve done that, you should be able to access the site without any problems.

Conclusion

The error message “Error unable to verify the first certificate” appears when a SSL certificate’s chain is not complete. The most common cause of this error is that the intermediate certificates ( SHA256) are not installed on the server.