Setting the policy to Enabled or leaving it unset turns on Google Cast, which users can launch from the app menu, page context menus, media controls on Cast-enabled websites, and (if shown) the Cast toolbar icon.
Setting the policy to Disabled turns off Google Cast.
Registry Hive | HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER |
Registry Path | Software\Policies\Google\Chrome |
Value Name | EnableMediaRouter |
Value Type | REG_DWORD |
Enabled Value | 1 |
Disabled Value | 0 |