http://ayende.comAyende @ RahienCopyright (C) Ayende Rahien 2004 - 2021 (c) 202660That is possible, except that I get the page that I would expect, not the login page. http://ayende.com/2691/update-panel-hates-me#comment9http://ayende.com/2691/update-panel-hates-me#comment9Fri, 10 Aug 2007 12:15:32 GMTI've got one with Forms Authentication. when user log out on one page but there is 2nd open and he perform some action on 2nd page's update panel http://ayende.com/2691/update-panel-hates-me#comment8http://ayende.com/2691/update-panel-hates-me#comment8Fri, 10 Aug 2007 12:14:22 GMTI've got one with Forms Authentication. when user log out on one page but there is 2nd open and he perform some action on 2nd page's update panel http://ayende.com/2691/update-panel-hates-me#comment7http://ayende.com/2691/update-panel-hates-me#comment7Fri, 10 Aug 2007 12:14:22 GMTYeah, I get this now and then too...I tried enabling the Fiddler but then I couldn't replicate. Kinda hard to debug. Only thing I noticed that after adding AjaxControlToolkit control on the page, I'm seeing this more often. I could be wrong though! http://ayende.com/2691/update-panel-hates-me#comment6http://ayende.com/2691/update-panel-hates-me#comment6Thu, 09 Aug 2007 19:24:23 GMTATLAS is also very finicky with invalid html and will revert to a full postback when the xhtml is invalid. Are you sure that you don't have periodic xhtml validation errors? http://ayende.com/2691/update-panel-hates-me#comment5http://ayende.com/2691/update-panel-hates-me#comment5Thu, 09 Aug 2007 15:20:44 GMTHave you tried enabling Fiddler so you can go back and see what might have been different with the requests that resulted in full page HTML being returned? http://ayende.com/2691/update-panel-hates-me#comment4http://ayende.com/2691/update-panel-hates-me#comment4Wed, 08 Aug 2007 22:24:18 GMTMike, I have enableEventValidation="false" at the web.config level, so I don't think that this is the issue. At any rate, it looks like something cause the UpdatePanel to send the whole page, no just the parts under the update panel. http://ayende.com/2691/update-panel-hates-me#comment3http://ayende.com/2691/update-panel-hates-me#comment3Wed, 08 Aug 2007 20:43:03 GMTWe had the same thing and corrected it the same way last week. It's one of those pet hates out there... http://ayende.com/2691/update-panel-hates-me#comment2http://ayende.com/2691/update-panel-hates-me#comment2Wed, 08 Aug 2007 19:33:21 GMTThis is a known issue with ASP.NET ajax . You can turn EventValidation='false' (they actually propose that as a solution...) . Here's one post that has details... http://weblogs.asp.net/leftslipper/archive/2007/02/26/sys-webforms-pagerequestmanagerparsererrorexception-what-it-is-and-how-to-avoid-it.aspx http://ayende.com/2691/update-panel-hates-me#comment1http://ayende.com/2691/update-panel-hates-me#comment1Wed, 08 Aug 2007 17:59:10 GMT