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How to Fix a Not Secure Website

If your website shows as “Not Secure”, visitors can lose confidence immediately. Here’s what that warning usually means, what causes it, and how to start fixing it properly.

What does “Not Secure” mean?

A “Not Secure” warning usually appears when a browser does not fully trust the connection or setup of your website. This often points to an HTTPS, SSL or content-loading problem rather than just a design issue or temporary browser glitch.

To visitors, the warning creates immediate doubt. Even if your site still loads, people may hesitate to fill in forms, make purchases or submit personal information.

In many cases, the website owner does not realise how serious the warning looks until trust and conversions are already being affected.

Why this matters

A “Not Secure” warning can damage trust in seconds

  • Visitors may leave before interacting with your site
  • Forms, checkouts and enquiries can drop sharply
  • Your business can appear outdated or unsafe
  • The underlying issue may point to wider configuration problems

Common causes

The most common reasons a website shows as Not Secure

The warning can appear for different reasons, but these are some of the most common causes businesses run into.

Expired or invalid SSL certificate

If the SSL certificate is expired, missing or incorrectly installed, browsers may stop trusting the secure connection.

Mixed content issues

A website may load over HTTPS but still pull in insecure resources like images, scripts or files over HTTP.

Incorrect redirects or HTTPS setup

Redirect problems, incomplete HTTPS enforcement or server misconfiguration can stop the website from appearing fully secure.

Underlying trust or security issues

Sometimes the warning is linked to wider security problems that need checking alongside the certificate itself.

How to fix it

Fixing a “Not Secure” website usually means checking SSL, HTTPS and content setup together

01

Check the SSL certificate status

Start by confirming whether the certificate is valid, current and installed correctly on the live website.

02

Check for mixed content and insecure resources

Even with SSL in place, browsers can still show warnings if parts of the page are loading insecurely.

03

Review redirects and HTTPS enforcement

The site should consistently push traffic to the secure version and avoid confusing or broken redirects.

04

Retest after changes are made

Once the problem is addressed, the website should be checked again to confirm browsers now trust it properly.

Can you fix a “Not Secure” warning yourself?

Sometimes yes — especially if the issue is a straightforward certificate renewal or hosting setup change.

The difficulty is that “Not Secure” warnings often have more than one cause. You may be dealing with SSL expiry, mixed content, bad redirects, CDN behaviour or wider site configuration problems all at once.

That is why many businesses start with a full scan, then either hand the findings to a developer or use an expert fix service to make sure the site is fully trusted again.

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Check website trust issues in one scan

Cyboruz checks SSL, HTTPS trust signals, security headers, blacklist status and more — helping you identify the technical issues that can cause a website to show as “Not Secure”.

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Quick questions

Fix not secure website FAQ

Why does my website say “Not Secure” if I already have SSL?

This can happen when the certificate is misconfigured, partially installed, expired, or when the site still loads insecure content in the background.

Can mixed content cause a “Not Secure” warning?

Yes. A page can use HTTPS overall but still trigger trust issues if scripts, images or files load over HTTP.

Will visitors see the warning immediately?

In many cases yes, especially in modern browsers. That is why these issues often affect trust very quickly.

Does Cyboruz help identify why a site is not secure?

Yes. Cyboruz checks SSL, security headers, blacklist status and related trust signals to help uncover why a website may not appear secure.

Find the reason your website is losing trust

Run a free Cyboruz scan to check SSL, HTTPS trust, security headers, blacklist status and more — all in one place.

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