HttpsOnlyMode

This policy controls whether users can enable HTTPS-Only Mode (Always Use Secure Connections) in Settings. HTTPS-Only Mode upgrades all navigations to HTTPS. If this setting is not set or set to allowed, users will be allowed to enable HTTPS-Only Mode. If this setting is set to disallowed, users will not be allowed to enable HTTPS-Only Mode. If this setting is set to force_enabled, HTTPS-Only Mode will be enabled in Strict mode and users will not be able to disable it. If this setting is set to force_balanced_enabled, HTTPS-Only Mode will be enabled in Balanced mode and users will not be able to disable it. force_enabled is supported from M112 onwards, force_balanced_enabled is supported from M129 onwards. If you set this policy to a value that is not supported by the version of Chrome that receives the policy, Chrome will default to the allowed setting. The separate HttpAllowlist policy can be used to exempt specific hostnames or hostname patterns from being upgraded to HTTPS by this feature.