Common error users complain about is the Error 503 certificate has expired. It means the browser is having difficulties validating the server you’re connecting with. However, this error can occur for various reasons like old/corrupt cookies and caches, invalid certificates, and many more.

What does the Error 503 certificate has expired mean?

For the browser to be able to load websites, it needs to authenticate its SSL certificate and run the SSL handshake. However, if there are any issues with the website’s certificate, it can prompt the Error 503 certificate has expired. Hence, the browser won’t be able to authenticate the certificate and cause an Error 503 certificate has expired in Chrome.

What causes a 503 error?

Quick Tip:

Install the Opera browser if you want to learn more about a site’s security certificate. The issuer of the certificate, type of certificate, and if the issuer is legitimate will be seen in Opera. Opera has already created procedures and processes for Extended Validation certification and is on the cutting edge of standard compliance. Manage certificates under Privacy Settings.

How do I fix error 503?

1. Renew your SSL certificate

Renewing the SSL certificate keeps your website recognizable, and the browser can authenticate your certificate. However, you can contact your certificate authority for renewal or visit sites like Let’s Encrypt to generate a free valid certificate.

2. Clear your browser’s cache and cookies

After completing the process, restart your browser and check if the error persists.

3. Reset your device’s time and date

Resetting your device time and date to your correct geo zone can help fix the 503 error. However, it will help the browser recognize the correct date in correlation to the certificates. Nonetheless, users encounter many other SSL certificate-related issues while trying to use the internet. Hence, we recommend that you check our article on the 12 ways to fix your connection to this site is not secure. Furthermore, if you are interested in learning about how to fix a problem with the security certificate, check our guide here. Leave your suggestions and questions in the comments section below, we’d like to hear from you.

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