http://developers.de/blogs/damir_dobric/archive/2010/03/25/crazy-sharepoint-error.aspxFirst of all welcome to one of thousands of posts with this error. If this is not your very first hit, you might already be frustrated. In this case I hope this post will help you at least a bit. So, you are probably reading this, because you have gotenCommunityServer 2008 SP1 (Build: 30619.63)http://developers.de/blogs/damir_dobric/archive/2010/03/25/crazy-sharepoint-error.aspx#271260Thu, 16 Feb 2012 10:21:06 GMT7e491611-45ad-4dae-a68f-c4cb64439510:271260Chris Ramer<p>Hmm for me it is not working. I get an error that it is not allowed to add this code:</p> <p>&lt;authentication mode=&quot;Windows&quot; /&gt; </p> <p>&lt;identity impersonate=&quot;true&quot;/&gt;</p> <p>to the web.config</p> <div style="clear:both;"></div><img src="http://developers.de/aggbug.aspx?PostID=271260" width="1" height="1">http://developers.de/blogs/damir_dobric/archive/2010/03/25/crazy-sharepoint-error.aspx#11602Tue, 27 Apr 2010 12:55:35 GMT7e491611-45ad-4dae-a68f-c4cb64439510:11602Guy<p>Cheers so much. this took me ages to resolve.</p> <div style="clear:both;"></div><img src="http://developers.de/aggbug.aspx?PostID=11602" width="1" height="1">