If your certificate uses only the Secure Hash Algorithm 1 hash function, then it may be flagged as invalid by the browser as this hashing algorithm is quite outdated. There are many ways in which the structure of your certificate may be broken, the most common among them being an invalid digital signature. If the structure of your TLS/SSL certificate is broken, that too may be a reason behind the invalid certificate error. As a result, the verification will fail and an error message will be shown. If the date and time is not correct on your computer/device, it won’t fall into the validity period for which the certificate has been issued. TLS/SSL certificates are issued for a year (or more). The break-in chain of trust happens when the identity of the certificate issuer can’t be verified either due to the expiry of its certificate or due to any other reason. If the certificate’s chain of trust is broken, it’ll inevitably lead to TLS/SSL error. If there is a mismatch in your site’s domain and the domain for which certificate has been issued, there will be an error in verification, and the browser will show a TLS/SSL error. If you have made any mistake during the certificate’s installation, there is no way for the browser to verify your business identity properly. One of the most common reasons behind a TLS/SSL error is misconfiguration of your certificate during installation. Here they’re: Misconfiguration of certificate There can be a variety of reasons behind the display of invalid TLS/SSL error for your site in the browser. Reasons of Invalid TLS/SSL Certificate Error Now let’s check the reasons behind it, and how you can fix it. The invalid certificate error is shown when your browser fails to validate your certificate.Ī failure in validation essentially means that your business’s identity remains unverified, which is equal to not having any SSL certificate installed at all. It can be fixed through a proper procedure, and in this article, we’ll explain how do you fix “the certificate for this server is invalid” error.īefore we go through fixing the Invalid TLS/SSL Certificate error, let’s take a quick look at what it means and when it is shown.

But don’t worry, it’s not something that can’t be fixed.

Most of the time this error appears right after you install your new SSL certificate, so it’s easy to be terrified by it. You may be thinking about what does invalid certificate means, whether my site has been hacked, what did I do wrong, and how to fix this issue at the earliest. If your website is showing Invalid TLS/SSL Certificate error, your mind may be going through a lot of questions.

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