WLW has been great for posting to my Wordpress blog, but recently I'm getting the message above.
I'm using Vista on the Chinese mainland.
What is strange is that when I edit on WLW, the first post of the day publishes. After that, it sticks on the error message.
I thought maybe the problem was with WLW, but I downloaded a few other online blog editing software programs and they also fail to publish while showing the "xmlrpc.phc" error.
I notice the error is indicating a "https://" address, which is not what I've inputted in the WLW "Blog Account".