AlegroCart

im using https but when i try to remove the cart, the notification show up

"The information you have entered on this page will be sent over an insecure connection and could be read by a third party."

I 've written a base https in config.php and all went well but when pressing a button on a cart remove update that notifications appear.

Have you set "Use SSL" to yes in admin/settings?

yes i have..

how can i fixed it?

So, you have not modified HTTP_BASE, and just added https://whatever to HTTPS_BASE line?

This is not a problem or a bug. When you add items to the cart, you can view the cart through http.
If you hit checkout, you will be directed to login, which uses https. After you login, you are directed back to cart, again using https.
Only checkout or customer pages use https. if you were anywhere in the checkout process and return the the display pages like home, category, etc, you will by using http. Anytime you go from a https, secure server page, to a http page, this notice is generated by the browser.

Brent wrote:This is not a problem or a bug. When you add items to the cart, you can view the cart through http.
If you hit checkout, you will be directed to login, which uses https. After you login, you are directed back to cart, again using https.
Only checkout or customer pages use https. if you were anywhere in the checkout process and return the the display pages like home, category, etc, you will by using http. Anytime you go from a https, secure server page, to a http page, this notice is generated by the browser.

That is definitely right @Brent ! SSL is only used when the user is logged in and/or when on checkout page.

how much does ssl certificate cost? Is it necessary for SEO?

It is not necessary for SEO. Ask your host for price.