Forums / Posting via XML-RPC not working since yesterday. faultCode 500 Posting via XML-RPC not working since yesterday. faultCode 500 kathrynwp · Staff · Dec 6, 2012 at 7:53 pm Copy link Thanks, I’ve responded to you there. 1 2 The topic ‘Posting via XML-RPC not working since yesterday. faultCode 500’ is closed to new replies.