Why does my browser say “Not Secure” even though I have an SSL certificate?

By Windy Hosting • April 4, 2026

Even with an SSL certificate, browsers might display a “Not Secure” warning for several reasons. It could be due to mixed content on your page (where secure HTTPS content is mixed with insecure HTTP content), an expired SSL certificate, or the certificate not being properly installed or configured. Always ensure your certificate is up-to-date, correctly installed, and that all content is loaded over HTTPS.

Good to Know: Modern browsers prioritize user security and will give warnings even for minor security lapses. Addressing these promptly ensures trust with your visitors.

This post is brought to you by Windy. Windy is affordable multi-site Windows hosting for everyday websites. It is designed to get ASP.NET sites online quickly, and allow easy management. Windy suits small business projects and client hosting. Authored by Yasser Masood.

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