Allows you to specify which extensions the users can NOT install. Extensions already installed will be disabled if blocked, without a way for the user to enable them. Once an extension disabled due to the blocklist is removed from it, it will automatically get re-enabled.
A blocklist value of '*' means all extensions are blocked unless they are explicitly listed in the allowlist.
If this policy is left not set the user can install any extension in Google Chrome.
|Registry Hive||HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER|