Every page where we use the Rad Ajax manager no longer works. When you do an ajax event, sometimes it will work the first time, but it no longer works any time after the first. This is for all pages where we use Rad Ajax. The .Net runtime is 2.0 (it hasn't changed), the webconfig hasn't changed, and our version of rad hasn't changed, and the pages haven't changed. I've watched the messages passed between the browser and the server. The browser make the AJAX request and the server returns it correctly. But the page just sits there with the loading message until it times out after 90 seconds. I've extended the timeout to 10 min and it still didn't fix the problem. The server does return the correct data in the correct format with the correct headers.

Any Ideas on what could cause this?  The ajax controls work fine when running localhost on my dev machine.  It's only on the webserver that it does not work.

Hello Ross,

The described behavior could be caused in some cases when several subsequent requests are made before waiting for the return vale.
However as the provided information is not enough to isolate the root cause of the issue you are facing, please prepare a simple, fully runnable reproduction demo, open a new support ticket and send it to us along with very detailed reproduction steps and explanations and we will debug it locally and we will do our best to help.


Regards,
Maria Ilieva
the Telerik team