SQL Reporting Services 2012 ,Exception

Question

Guys
We are facing an issue on report server 2012 and message is as follows
message from the server cannot be parsed
Common case for this exception are when the response is modified by calls to response.write(),response filters , http modules
I will attach an image once the thread is verified
Please assist us in case if any one faced this issue before
Regards
DataGeek_84

Answer 1

Hi DataGeek_84,
Based on my research, the error” Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters,
HttpModules…” always occurred when you have used the Microsoft ASP.NET AJAX UpdatePanel control.
From the error message, we can easily find the common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled. To avoid those given errors, please see:
Calls to Response.Write():
Place an <asp:Label> or similar control on your page and set its Text property. The added benefit is that your pages will be valid HTML. When using Response.Write() you typically end up with pages that contain invalid markup.
Response filters:
The fix might just be to not use the filter. They're not used very often anyway. If possible, filter things at the control level and not at the response level.
HttpModules:
Same as response filters.
Server trace is enabled:
Use some other form of tracing, such as writing to a log file, the Windows event log, or a custom mechanism.
For more information about how to avoid Sys.WebForms.PageRequestManagerParserErrorException, we can refer to the following excellent blog entry by Eilon Lipton.
http://weblogs.asp.net/leftslipper/archive/2007/02/26/sys-webforms-pagerequestmanagerparsererrorexception-what-it-is-and-how-to-avoid-it.aspx
If there are any misunderstanding, please elaborate the issue for further investigation.
Thanks,
Katherine Xiong
Katherine Xiong
TechNet Community Support