Upgraded the WLW to built 14.0 and tried to open the posts from my WordPress MU 2.6.5 today, but got error message saying “there was error 500 while processing the file xmlrpc.php”.
Double checked my WP settings and found that the xmlrpc had been turned on already. It seemed to me it was a web server parsing php code error.
After poking around the internet, and concluded that there is an issue with the xmlrpc.php code if the server default service is PHP4. That means if your web server parsing your WordPress php code in PHP4 mode, then you would get problems to view blog posts from Windows Live Writer, and in some case you can not upload images in WLW with xmlrpc method.
I hope there will be a fix soon. But right now, I will have to force my web server to call the WordPress codes in PHP5 mode.
To do so, just add the following two lines at the begining of your .htaccess file.
AddType x-mapp-php5 .php
AddHandler x-mapp-php5 .php
After that, you just upload the modified .htaccess file and everything should be fine again.
Good Luck!
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