Why is UpdatePanel working on local IIS but not on remote IIS?

Question

It seems that most of AJAX is working fine for my web site(VB.Net), but UpdatePanel on remote IIS6 doesnt work at all.

I've checked setting in the web.config file. it's true.

Answer 1

I have tried all the suggestions but still my update panels on .net 3.5 would not work on my production server but worked fine on my development machine. I checked the Web.config files for consistency and everything was the same except for:

compilation debug="false"

On my production server and:

compilation debug="true"

On my development server.

So as a last resort, I changed my production server to "true" and everything works just fine.

Answer 2

Please see this URL:

http://weblogs.asp.net/scottgu/Don_1920_t-run-production-ASP.NET-Applications-with-debug_3D001D20_true_1D20_-enabled

There is a section on "What about binaries compiled with debug symbols?" which I think will help you with your issue. You should change you debug flag back to false on production.

Answer 3

For anyone still working with a legacy website, check if the web.config has the xhtmlConformance node set to "Legacy". Commenting this out resolved the issue with the UpdatePanel not working. Apparently this was added automatically when using the VS 2003 to 2005 migration tool. As far back as 2006, Scott Gu said not to use it.

https://weblogs.asp.net/scottgu/gotcha-don-t-use-xhtmlconformance-mode-legacy-with-asp-net-ajax

<!--<xhtmlConformance mode="Legacy" />-->