Enable Site Isolation for every site

Setting the policy to Enabled isolates all sites. (Each site runs in its own process.) Setting the policy to Disabled or leaving it unset doesn't turn off site isolation, but it lets users opt out (for example, by using Disable site isolation in chrome://flags).

IsolateOrigins might also be useful for fine-tuning origins. On Google Chrome OS version 76 and earlier, set the DeviceLoginScreenSitePerProcess device policy to the same value. (Because if the values don't match, a delay can occur when entering a user session.)

Note: For Android, use the SitePerProcessAndroid policy instead.

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
Value NameSitePerProcess
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

chrome.admx

Administrative Templates (Computers)

Administrative Templates (Users)