问题
Our Sharepoint portal has been active for some years now but I'm just now getting bug reports about some controls not working. So far all problem reports are from subsidiaries - some here in Germany, others in the US.
The controls are all on UpdatePanels and cause the following error message:
Meldung: 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, or server trace is enabled.
Details: Error parsing near '
<!DOCTYPE html PUB'.
Zeile: 5
Zeichen: 62099
Code: 0
URI: http://portalp/ScriptResource.axd?d=tBOLY2kq1uaK6kD_aXo93OFalhL9aphke4d53_sq1dRfcIBYE0qIgcmWdYC742LMtXwFgP2IzLEYaioM3yrkYNf-n3bi_8-9pLWAF-I15SU8jWyqpTkbSR81uDJ86tOJOuR4XKJDTwjdIMIgm4FHTe7O0Ng1&t=ffffffffb868b5f4
I have read a number of the other posts on this subject and also the developer blog but I cannot see that I am breaking any of the rules.
We are using Sharepoint 2010 on IIS 6.1. End users have Win7 & IE7.
As no one in-house has mentioned this problem, I'm assuming a firewall problem. I think if any of the above rules were being broken it would affect all users - right?
Has anyone else had this kind of problem?
UPDATE
Just did some tests with the firewall and think that it can be ruled out. So I'm still puzzling over this one...
UPDATE Seems to be dependent on which Windows user is active. If I use my user on a pc in a subsidiary then it works. I'll post more later...
SOLUTION
I was so fixed on why the one one webpart was not working that I did not consider other webparts. There is another webpart which did actually use Visible and this was the cause. It was setting the Visible attribute false when the user is not on the main site. Simple really but cost me a lot of time :-(
来源：https://stackoverflow.com/questions/9212314/sys-webforms-pagerequestmanagerparsererrorexception-the-message-received-from-t