If this policy is set to true, the user can not access the Add-ons Manager or about:addons.
If this policy is set to true, the user can not access about:config.
If this policy is set to true, the user can not access about:profiles.
If this policy is set to true, the user can not access about:support and the "Troubleshooting Information menu" is disabled.
"Certificates": { "ImportEnterpriseRoots": [true|false] }
If this policy is set to true, Firefox will read certificates from the Windows certificate store.
"Cookies": { "Allow": ["http://example.org", "http://example.com"] }
If this policy is set, cookies are always allowed for the URLS indicated. If a top level domain is specified (http://example.org), cookies are allowed for all subdomains as well.
"Cookies": { "Block": ["http://example.org", "http://example.com"] }
If this policy is set, cookies are never allowed for the URLS indicated. If a top level domain is specified (http://example.org), cookies are allowed for all subdomains as well.
"Cookies": { "Default": [true|false] }
If this policy is set to false, Firefox will not accept cookies.
"Cookies": { "AcceptThirdParty": ["always"|"never"|"from-visited"] }
If you have enabled cookies, you can use this policy to determine how third-party cookies are handled:
"Cookies": { "ExpireAtSessionEnd": [true|false] }
If this policy is set to true, cookies will expire when Firefox is closed.
"Cookies": { "Locked": [true|false] }
If this policy is set to true, cookie preferences cannot be changed.
If this policy is set to true, Firefox updates are disabled and locked.
If this policy is set to true, the master password functionality is removed from the browser.
If this policy is set to true, the "Set As Desktop Background..." menuitem is removed.