Can group policy be used to manage the 'RpcAuthnLevelPrivacyEnabled' setting and address the '0x00011b' error across a domain?

Yes, Group Policy can centrally manage the `RpcAuthnLevelPrivacyEnabled` setting. Create or modify a Group Policy Object (GPO) targeted to the relevant computers. Navigate to Computer Configuration -> Preferences -> Windows Settings -> Registry. Create a new Registry Item with the same settings as described in the registry modification workaround. This allows for controlled deployment and rollback of the workaround across a network.