How to Fix “Connection Not Secure” in Microsoft Edge—12 Working Solutions

Last Updated: May 18, 2026

Seeing the “connection not secure” Edge warning in Microsoft Edge on Windows 10 or Windows 11 is confusing for most users. The browser says, “Your connection is not secure,” but the website might actually be fine. In many cases, the problem is an Edge TLS/SSL certificate error on Windows 11, mixed content, or a time mismatch on your PC.

This guide covers the Microsoft Edge “your connection is not secure” fix step-by-step for 2026. You will learn safe ways to fix the error, when it is okay to bypass it, and when you must stop to protect your data.

Seeing the “your connection is not secure” warning in Microsoft Edge when trying to visit websites can be concerning.

This error indicates the connection between your browser and the website is not fully encrypted. However, in many cases, the website may not actually have any security risks. An invalid SSL certificate or mixed content issues often cause the error.

Fortunately, you can resolve “connection not secure” errors in Edge without compromising safety. First, check if the site has an EV SSL certificate and legitimate affiliation details to confirm it is not a phishing site. For well-known sites, the invalid certificate is likely a technical issue on the site’s end.

The confusion between HTTP and HTTPS is often the cause. As we know, the HTTPS indicates that the encryption between your browser and the site server is secure. For this, the site owner has to install an SSL certificate.

Sometimes, the URL may be HTTPS, but the inner links and content may be HTTP. We call it “mixed content.” Most of the time, it is the culprit for the “site not secure” error. In this article, we shall see the common reasons and solutions to fixing the error.

Edge “connection is not secure” messages and what they mean (2026)

Edge message text	Typical code/cause	What it usually means (short)
Your connection isn’t secure	NET::ERR_CERT_AUTHORITY_INVALID	The certificate is not trusted; it is self-signed, or the CA is incorrect.
This site is not secure	DLG_FLAGS_SEC_CERT_CN_INVALID	The certificate name does not match the site domain.
The connection for this site is not secure	ERR_SSL_PROTOCOL_ERROR	The error is due to a mismatch in the TLS/SSL protocol or cipher.
Only some content on this page is secure	Mixed content: HTTP elements on an HTTPS page	Mixed content blocked in Microsoft Edge for safety.
HTTPS-only mode failed; site is not secure	Edge HTTPS-only could not upgrade the connection	Edge’s HTTPS-only mode is not working for that website.

Why do you get the “Website not secure” error in Microsoft Edge?

• There are some common reasons.
• The site may be HTTP instead of HTTPS.
• The security certificate of the site is invalid or outdated.
• The date and time of the site and your PC have a mismatch. Microsoft thinks the SSL certificate expired.
• Errors and bugs in Edge can cause this error.
• Junk and temporary files accumulated in the Edge cache can cause it.

Safe ways to fix “Microsoft Edge connection is not secure” (recommended)

Start with safe fixes that do not weaken browser security. These work for most “connection not secure Edge” problems caused by certificates, cache, or configuration issues. Try each method in order and reload the site after every step.

Clear MS Edge cache and cookies

Sometimes, the old certificates still remain, even though new HTTPS certificates are installed. So it’s better to clear the Microsoft Edge cache and cookies once in a while. To do so, follow these instructions.

1. Press Ctrl + Shift + Del, and a pop-up window opens.
2. Select the time range as all time.
3. Browsing history, download history, cookies and other site data, cached images, and files will be automatically checked. Otherwise, check those options.
4. You can check site permissions also.
5. Click on Clear Now and restart the browser.

Please load the website and verify if the warning has been resolved.

Temporary bypass for known‑safe internal sites (not recommended for public sites)

Use these options only if you fully trust the site, such as an internal company site or lab server. For banking, shopping, email, or any public website, do not bypass “your connection is not secure” in Microsoft Edge. These steps reduce protection and should be treated as temporary.

The Not Recommended Action

If Microsoft Edge displays a red warning sign that your connection isn’t private. Attackers might be trying to steal your passwords, etc.

NET:ERR_CERT_AUTHORITY_INVALID

There is an Advanced option below it. Click it.

It says that the system could not trust the site security certificate. Especially when there is an HTTP site or mixed content site. It can also be that the site is malicious.

If you know the site well and have true intentions to visit the URL, then click on Continue to (unsafe). Your site will be loaded, but at your own risk.

How to Fix “Your Connection is Not Secure” Error in Microsoft Edge

Try refreshing the page or clearing the browser cache and cookies to force Edge to recheck the certificate. If the site is loading mixed HTTP and HTTPS content, use Edge’s isolation feature to only load the HTTPS version. Sites can also be added to the trusted sites list to exempt them from security checks.

Disabling the “Block insecure content” setting in Edge will allow all HTTP pages to load without warnings but opens more risk of malware. Proceed with caution. For invalid certificate errors, you can also click “Continue to webpage” on the warning screen to bypass the message; however, this is not advised for sensitive transactions.

With proper troubleshooting, you can solve “not secure connection” errors in Edge without lowering security or switching browsers. Check for phishing sites, refresh pages to reload certificates, isolate HTTPS content, or add exceptions for trusted sites.

How to make mixed content always HTTPS?

After making sure that the site is secure, you can always run an HTTP or mixed content site in HTTPS mode.
Enter the following URL in the address bar.

edge://flags/#edge-automatic-https

The automatic HTTPS flag will be seen. Click the drop-down beside it and enable it. Restart Microsoft Edge. Now you will open any site with HTTPS and remove the “not secure” warning in Microsoft Edge.

Use InPrivate Mode

This is a secure mode for better privacy. But you can use it to remove the warning and browse the site.
Click the three horizontal dots and New InPrivate Window. Open the site URL in it. Your problem should be fixed.

Disable or Remove extensions

A lot of small features are in the form of extensions. Unknowingly, without knowing about the bugs, you might have installed some extensions. The incompatibility between Microsoft Edge and these extensions can cause the security lapse.

• Click the 3 dots, then select Extensions > Manage extensions.
• Under the extension there is a Remove label.
• Click it and it’s gone.

Now check the site after restarting Microsoft Edge. Do this with every other extension if the current extension removal doesn’t resolve the issue.
Make a note of extensions. Update them to the latest version.

Update Microsoft Edge

Edge does not automatically update. It will take some time before the new version is installed. Before that, you can manually do it.

Click the 3 dots and Help and feedback > About Microsoft Edge. If there is an update, it will get installed. Restart the browser and check the site URL.

Check for site Certificate address mismatch

By default, Internet options still play a role in Microsoft Edge’s settings. You can uncheck this setting and load the site. Make sure the site you are visiting is 100% legit before doing it.

Otherwise, malware may corrupt your system.

1. Open the Control Panel and set the view to small icons.
2. Click on Internet Options > Advanced.
3. In the pop-up, scroll through to the Security section.
4. If the “Warn about certificate address mismatch” setting is checked, uncheck it.

Load the site to see if the error is gone.

Check for HTTPS

In the URL or address bar, check if the URL starts with HTTPS. That means the site is mostly secure. But if you still get the warning,

This site is not secure DLG_FLAGS_SEC_CERT_CN_INVALID

It is better not to visit the site.

Treat Insecure Origin as Safe

If you are doubly sure that the site is secure, you can remove the warning with the help of a flag.

edge://flags/#unsafely-treat-insecure-origin-as-secure

Insecure origins treated as secure are open. Beside it, there is a drop box. Select the enabled option. Now the warning will be gone, and the site will go through.

But this option is a last resort.

This flag is mainly for developers and test environments and is often used together with Edge managed browser security policies in corporate networks.

Allow Insecure content to pass through

In Windows 11 and 10, Microsoft Edge has a security setting that you can bypass.

• This will make the HTTP site resolve as an HTTPS site.
• Click the 3 dots and Settings.
• Click on Cookies and site permissions, then select Insecure content.
• Click the Add button and add the URL.
• This will make the insecure content visible on secure sites.

Use a Proxy or VPN

The message is
“The connection for this site is not secure ERR_SSL_PROTOCOL_ERROR.”
If you encounter the aforementioned issue, you won’t have the option to continue further. In such cases, you can try a proxy IP or VPN to access your website. It is a temporary solution. Otherwise, you can try some of the below fixes.

Internet Explorer Incompatibility

You can open the site URL in IE compatibility mode if it’s an old version PC with an old build of Windows 10 or 11. It may work, but at your own safety.

Use Group Policy Editor on Windows 10 Pro

If you are an administrator and using the Pro version, you have access to the Group Policy editor. Type gpedit.msc in the Run dialog box or search and open the Local Group Policy editor.

Go to Computer Configuration/Administrative Templates/Microsoft Edge

Double-click the option that says “Control where security restrictions on insecure origins apply.” Enable that option. Now restart Edge.

The same policy can be configured in Microsoft Intune for Azure AD-joined devices, so Edge behaves consistently across all managed PCs.

Manage Certificate Authentication

In the settings of the Microsoft Edge browser, you can change the authentication of security certificates.

1. Open the Settings page like earlier.
2. Then type “Manage certificates” in the search bar.
3. The security page opens on the right-hand side.
4. Click the arrow icon beside Manage certificates.
5. The intended purpose is all by default.
6. Change it to “Client Authentication.”

Now load the URL. You can change it once your work is done.

FAQs about “connection not secure” in Microsoft Edge (2026)

Dont Uninstall Microsoft Edge

The default browser for Windows, from Microsoft, is connected with various other apps. Disabling or deleting Microsoft Edge could potentially impact other programs. It may slow down the system or cause high memory usage.

So one of the above solutions should fix the security error.