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Thank you so much, Franz!<br><br>Indeed, the problem is coming from xml. It is well-formed but seems the server can't understand it. <br>The whole xml document I used is the similar with yours except the root element with namespace which <br>is showing below:<br><br><cr: ruleset xmlns="urn:ietf:params:xml:ns:common-policy" <br> xmlns:pr="urn:ietf:params:xml:ns:pres-rules" <br> xmlns:cr="urn:ietf:params:xml:ns:common-policy"><br><br><br>I got no error sending the xml doc with this as beginning. Only no Notify message after updating Publish, <br>and sometimes the first Subscribe can't get through that is no Notify sending back from server. It's really<br>weired! Anyway, I finally fix it with your advise, Thanks Indeed.<br><br>Kevin,<br><br /><hr />Windows Live Writer，支持离线撰写博客内容，随时随地想写就写。 <a href='http://get.live.cn/product/writer.html' target='_new'>立即使用！</a></body>
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