Block third party cookies

Setting the policy to Enabled prevents webpage elements that aren't from the domain that's in the browser's address bar from setting cookies. Setting the policy to Disabled lets those elements set cookies and prevents users from changing this setting.

Leaving it unset turns third-party cookies on, but users can change this setting.

Supported on: At least Microsoft Windows 7 or Windows Server 2008 family

Registry HiveHKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
Registry PathSoftware\Policies\Google\Chrome\Recommended
Value NameBlockThirdPartyCookies
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

chrome.admx

Administrative Templates (Computers)

Administrative Templates (Users)