'Sys.WebForms.PageRequestManager' is null or not an object

Last post 7/7/2009 6:16:12 PM by Munish Sehgal. 4 replies.

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3/4/2008 4:26:17 PM
Hlynur	'Sys.WebForms.PageRequestManager' is null or not an object
	do you know why i get this error Error Message: 'Sys.WebForms.PageRequestManager' is null or not an object other ajax components are working and i am using the scriptmanager

3/4/2008 5:57:39 PM
Chris Pietschmann	Re:'Sys.WebForms.PageRequestManager' is null or not an object
	Could you post a code example that exhibits this issue? Also, please describe your hosting evironment; IIS6? IIS7? Partial Trust? Full Trust? Etc....

3/5/2008 8:37:40 AM
stevesuk	Re:'Sys.WebForms.PageRequestManager' is null or not an object
	I had this, found some reasons here:- http://weblogs.asp.net/chrisri/archive/2007/02/02/demystifying-sys-is-undefined.aspx For me I cured it by making my site an application, rather than a virtual directory. Regards, Steve.

3/6/2008 10:39:23 PM
Hlynur	Re:'Sys.WebForms.PageRequestManager' is null or not an object
	<xhtmlConformance mode="Legacy"/> this was the problem

7/7/2009 6:16:12 PM
Munish Sehgal	Re:'Sys.WebForms.PageRequestManager' is null or not an object
	I added the following tag in the <system.web> section in web.config and it worked <xhtmlConformance mode="Transitional"/>