3.2.5.2 Using the Protocol Versions

When Group Policy provides a GPO path, the client SHOULD<13> try Version One of the protocol; the client attempts to retrieve fdeploy1.ini using the GPO path, as specified in section 3.1.3, and parse it according to section 2.2.2. If the client successfully accesses the Version One file, it MUST NOT try Version Zero. If the Version One file is absent, the client tries Version Zero. It attempts to retrieve fdeploy.ini, and, if successful, parses it according to section 2.2.1.

Alternatively, the client simply attempts Version Zero of the protocol, fetching only fdeploy.ini and, if successful, parsing it according to section 2.2.1.