Have you ever been in a situation where you see this error pop-up at bottom of the CRM form:

The reason you see this is most probably that CRM is running in https (SSL) and you have some component on IFRAME showing data in http mode.

It might be a website pointing to some external thing that you want to show in your CRM but since it is not in https, you see this annoying error all the time.

So what is the best way to resolve it?

There are 2 ways to resolve this one:

1. Set the website you are pointing to be using https (SSL) as well. This is preferred one but not always possible.

2. This is an internet explorer setting as per the following KB article: https://support.microsoft.com/en-us/kb/2625928

A detailed description here:

This message is telling you that there may be both secure and non-secure content on the page. Secure and non-secure content, or mixed content, means that a webpage is trying to display elements using both secure (HTTPS/SSL) and

non-secure (HTTP) web server connections. This often happens with online stores or financial sites that display images, banners, or scripts that are coming from a server that is not secured. The risk of displaying mixed content is that

a non-secure webpage or script might be able to access information from the secure content.

But be careful to use this resolution: Important: Internet Explorer blocks non-secure content by default and is set to prompt you when this is happening.

Changing this setting may make your computer vulnerable to viral, fraudulent or malicious attacks. Microsoft does not recommend that you attempt to change this setting.

For Windows 7:

To Disable/Enable/Prompt the “Only secure content is displayed” message:

1. From the start screen, type Internet Options.

2. Tap or click the Settingsoption below the Search box, and then tap or click Internet Options.

3. Tap or click the Secruity tab, and then tap or click the Custom Level.

4. In the Settings box, scroll down to the Miscellaneous section, and under Display mixed content choose from the following options:
Disable, will not display non-secure items.
Enable, will always display non-secure items without asking
Prompt, will prompt you when a webpage is using non-secure content

For Windows 7 and Windows Vista:

To Disable/Enable/Prompt the “Only secure content is displayed” message:

1. Start Internet Explorer.

2. On the Tool menu, click Internet Options.

3. Click the Security tab, and then click Custom level.

4. In the Settings box, scroll down to the Miscellaneous section, and under Display mixed content choose from the following options:
Disable, will not display non-secure items.
Enable, will always display non-secure items without asking
Prompt, will prompt you when a webpage is using non-secure content

Once you change this, it will not be showing up on your browser anymore.

Hope it helps!