CKSource

{{#CUSTOMTITLE:Using CKEditor in Enhanced Security Configuration Mode}}
When you are running the Windows Server system and the Internet Explorer browser in Enhanced Security Configuration mode, note that '''CKEditor for SharePoint''' will not work unless <code>about:blank</code> is added to the '''Trusted sites''' zone.

[[Image:CKESP{{{version}}}_security01.png|frame|center|Internet Explorer Enhanced Security Configuration blocking CKEditor]]


To overcome this problem you should add <code>about:blank</code> to the '''Trusted sites''' zone. Open the Internet Explorer '''Tools''' menu and go to '''Internet options'''. Move to the '''Security''' tab and select the '''Trusted sites''' icon. Click the '''Sites''' button and add the <code>about:blank</code> address.

[[Image:CKESP{{{version}}}_security02.png|frame|center|Adding about:blank to Internet Explorer Trusted Sites]]


Additionally, if you are using CKEditor's built-in spell checker, you should also add the [http://www.spellchecker.net/ SpellChecker] web addresses to the '''Trusted sites'''.

[[Image:CKESP{{{version}}}_security03.png|frame|center|Internet Explorer Enhanced Security Configuration blocking the spell checker]]


This limitation is not related to CKEditor but is a consequence of using Internet Explorer Enhanced Security Configuration on the Windows Server system. Client browsers using '''CKEditor for SharePoint''' installed on Windows Server will not be affected.