How to disable 3rd party cookies in Chrome?
In the current Chrome (v56, checked 2/23/2017) it is no longer in about:flags, but moved to the main UI.
- Click on the triple-dots to open the menu (top right)
- Click Settings
- Scroll all the way down to the link "Show advanced settings" and click it
- In the Privacy section click the Content Settings button
- Under the Cookies section there is a checkbox for Block third-party cookies and site data. Make sure this one is checked to prevent third-party sites from setting cookies.
After enabling this is probably also a good time to delete all existing cookies.
into the url bar and hit enter, then enable "Block all third-party cookies"